Windows Support Forum

CMOS battery for Aspire 4741?

Q: CMOS battery for Aspire 4741?

I have been using the Aspire 4741 till now and everything has been normal. However, since 2 days ago, my system time has been keep resetting every new day and I have to force update it with internet time or manually correct it. I am suspecting that the CMOS battery is dead. Is there a specific model of the battery I need to buy? Any help is great.
Relevancy 100%
Preferred Solution: CMOS battery for Aspire 4741?

I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.

I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link (This link will automatically start a download of Reimage that you can save to your computer.)

Relevancy 81.27%

I've been advised to unplug and then replug the CMOS battery in order to clear the BIOS, due to problems I'm having getting my computer to start.  Where do I find the CMOS battery in this machine and how do I unplug it?  I've searched Youtube, and haven't seen anything.  Thanks!
Relevancy 80.41%

Hi guys: My Aspire 1430z-4677 netbook is losing time (it's 5 years old afterall). I think it likely needs a new CMOS battery. Is there a user guide for replacing the CMOS battery on this model? Thanks for helping.

A:Replace CMOS battery for Aspire 1430z

Hello, May be you can access the Cmos battery without disassembly. See attachment.
Relevancy 79.55%

Acer Aspire M3200 Recently changed CMOS battery due to loss of date however now keep getting American Megatrends "Open Chassis Warning" on boot up.Have tried to find reset / disable switch in Bios but not listed under either Security Features or Integrated Peripherals tabs. Any suggestions as to how I can reset so that I can boot up without having to go through the AMI Bios loop! Many thanks in advance.
Relevancy 79.12%

After download and completion of 1st stage of installation after reboot blue screen appear with message that "a require file missing or contain error". Tried many time and get same error.Current OS is Windows 7 64bit

A:Windows 7 to 10 update on my aspire 4741 failed. A...

Try holding down alt-F12 on boot and see if repair/recovery is available.
Relevancy 78.26%

hi i'm a bit of a novice when it comes to dealing with computer maintenance and i'm so afraid of messing up my system by taking chances so it Updates on Notebook Driver 4741 Acer Aspire comes like a breath of fresh air to know that there is a forum like this Driver Updates on Acer Aspire 4741 Notebook for windows i don't know why it took me so long to trace you guys btw on behalf of all the novices out there just allow me to say a quick thank you thank you for the help you're giving us i've learnt so much within the couple of weeks that i've been here great job guys and thanks again i have an quot Acer Aspire Notebook with intel core i quot operating on Windows bit Home Premium recently i've noticed some slight changes occuring on my system when i have my finger pressed on the mouse perharps a bit too long i don't even know what too long is the screen flickers shakes up and down i'm just not sure if this is normal my dvd device suddenly does not seem to be able to read media on my pre recorded dvds that use to play perfectly well without any problem what happens now is when i slot in a pre recorded dvd a dialog box pops up asking how i want to burn my media even though there is media already on it i ran a couple of test and ended up with a report that says my device has a quot bad block quot whatever that means i'm now thinking maybe i should update my drivers and my bios but the problem is how to correctly indentify this drives standing by ready to provide more info if somebody can find the time to help me out here thanks

A:Driver Updates on Acer Aspire 4741 Notebook

Sandpe, Welcome to the windows 7 forums, I agree that there are a lot of great helpers here.

You might want to go to Acer Support: Downloads & Support Documents - Notebook / Aspire / Aspire 4741G where they
can tell you the latest drivers for your system.

Of course you might want to make sure that your Anti-Virus is up to date.

Relevancy 69.23%

After my friend's laptop wouldn't run on battery power OR charge the battery I tried many "fixes."
Shockingly none worked that I found.
Only one thing worked for me to my surprise.
A last ditch effort was to open up the laptop (sony pcg-81114L) and disconnect the cmos battery for a few minutes to reset the CMOS.
To my surprise, when powered on, the battery instantly showed it was charging AND when removing the power plug the battery POWERS the laptop now! (and I'd thought I was wasting my time.)
Worked with an off brand battery also.
Many times this has saved many computers that have odd "unsolvable" things wrong with them.
Surely someone else has done this also but I haven't seen it posted anywhere to my knowledge.
Thank GOD for bringing the idea to remembrance!

A:sony vaio won't charge battery or run on battery power (CMOS BATTERY FIX!)

Hi askfault,
Do you have any information on how this fixes the battery problem? would be interested to know.
Relevancy 64.07%

Been working fine until a few days ago. When I turn it on it says 163 - Time and Date not set - There is no option in bios to set date Non-System disk or disk error replace and strike any key when ready - Bios cannot detect hard drive So the question is if the RTC Battery is weak or dead can it cause above issues Thanks Chris
Relevancy 64.07%

I have just replaced my CMOS/BIOS battery today, as , I have faced some critical problem regarding regular BIOS date/time reset after system shutdown. But I want to know how do i recognize, that my new batter is totally ok or functional.

Battery Meter gadget shows that "battery Not charging"
Is it a gadget problem?

Is there any method available so that I can track that my new installed CMOS battery in PC is working fine?

Please help me.

A:Battery Meter shows CMOS battery not charging

The battery you have replaced is solely there to maintain the clock and other BIOS settings (if you have changed them from their defaults). It will not prevent you from booting your system if it is dead/missing; all it means is that you will have to enter the BIOS each time and make the correct settings and time. This battery is not rechargeable.

Do you still have to enter the correct time, or is the BIOS maintaining this now you've changed the battery?
Relevancy 58.05%

my system clock slows down if I shutdown system. is it b'coz of my cmos battery is being low?
How do I find whether my system has a cmos battery?How will I know what type, who is the maker etc? How do I know whether it is getting low?can u suggest some softwares that check it? I am rather naive with hardware and has opened the motherboard only to clean it.My PC is 4 yrs old. Is there any problem if I don't change it other than system clock becoming low.If it is necessary to change cmos battery how much does it cost in rupees?

A:is cmos battery getting low

When you open your case you will see the CMOS battery on the motherboard. It resembles a watch battery. It is flat and round and looks almost a like a button. Just pop the battery out and off to Radio Shack or any other place that sells batteries for watches and other electronic devices. The first sign of a faulty CMOS battery is the system clock changing and not displaying or retaining the correct time.

Relevancy 58.05%

It's time to change the battery (first time for a machine I bought in 2004 - not a bad run). I can't get the old one out....any suggestions?

A:CMOS Battery

On side should have a metal contact.
You need to carefully pry it toward that contact as it is spring loaded,
then lift from the other side.
Should pop right out.
Be careful you don't want to break the socket.
Some older cmos batteries were soldered on,but I haven't
seen that since around 2000.
Relevancy 58.05%

I need to replace the CMOS battery in this older computer, and need to know the correct one to buy.  The HP website generic instructions and video shows that the battery is a 2032 , but I would like to be certain.  Can anyone tell me exactly which battery I need to buy?  Thanks.

View Solution.

A:CMOS battery

Hi, Yes, they are all the same 3V CR2032 which you can buy from many shops for few dollars. Regards.
Relevancy 58.05%

Hi can someone help please I need to replace the CMOS battery in my laptop but have not had any look purchasing one all local retailers say they dont stock them even the one where I purcased the laptop from, I did get one from Amazon which said it was the correct one but when I recieved it it was a slightly different end to the cable so can someone advise please. The model is HP G62 Notebook & the battery is a CR2032HF-243V. Thanks Normski.

A:CMOS Battery

Norm. To better help you we would need the exact model number or product number of your laptop/desktop??? REO
Relevancy 58.05%

Want to change my CMOS battery....what will I lose while it's out ? What will I have to reset other than the time and date ?KENNY

Relevancy 58.05%

what is this error when i boot my cusin portable it doest boot immediately error appears as" bad cmos battery -error date & time. it says there that i need to choose either f2 (utilities bios or press f1 .when press f2 it goes straight to bios of course! but the best option is to press f1 so it will bot normaly to the xp windows OS specs is WIN XP SP1. Do we need to replace the cmos battery now.

A:Bad CMOS battery

Does it do this on every boot up? Have you tried going F2, after your in the bios hit F10 (should prompt you to SAVE, if not, then exit and save) If it continues to do this then yes, you will need to replace the CMOS battery and hope that it is just the battery and not where it sits.
Relevancy 58.05%

I have a 486 mother board. When I boot up into DOS I get a message saying, CMOS BATTERY LOW. How do I replace it.

A:CMOS Battery

Crack the case open and look for it. THe older ones on 386 and 486 motherboards were some times integrated into the BIOS so you might be out of luck. Others had a small black pack that looked like 4 AAA batteries connected together and a red/black set of wires running to the can still get those.
Relevancy 58.05%

Wife has a compaq S4100NX that on more than one occasion has lost the tiem by one hr.(went backwards). So I started looking for a cmos battery and MUCH to my surprise, there isn't one on the MB. I thought all MB's has a cmos battery ????

Any different idea(s) on why it looses time ?

Relevancy 58.05%

i have an acer extensa 5620z which could only power on in few seconds then goes back off ,i did some research and i discovered that it was the cmos battery that was dead so i change hopping that every was going to be fine . when i plug the adaptor in to a power extension, first the pc came on automatically and when i shut it down to and couple it ,it could not come on i discovered that each time i remove the cmos battery and put it back the machine will power on but once i shut it down and couple it will not come on even to show a light .so i dont know if there is a configuration that i need to do please help me

A:cmos battery

Hi and Welcome to TSF!

A dying CMOS battery shouldn't prevent booting. A dying power supply or battery on the other hand might.
Relevancy 58.05%

I Have an old 166 Pentiun computer with a i430vx mainboard. My problem is that the CMOS battery is dying and from what I could find on the net, it is enclosed in a discontinued Houston Tech HT12888A RTC chip. Some of the info on the internet says that you can open the chip and change the battery though it may be soldered in place and other sources say to replace the motherboard. Also will an add in card containing a clock also power the CMOS. I leave the computer on all the time and it runs fine but when I shut it down and reboot I lose time and have started getting a checksum error/CMOS battery failed message. I have another computer and would like to give this to my son and would hate to scrap a good machine for a $3.00 battery. Any info on this problem would be greatly appriciated.

A:CMOS Battery

Well I could understand not wanting to scrap the system due to a battery. There are several options you could look in to. 1. you could purchase a new mother board( for under $100) install it and actually have expansion room for later, or 2. You could scrap the system and keep it to use its parts as test parts or replacement parts for another computer. If it was me that faced this problem I'd look at a new motherboard first maybe you could even find a good used one.
Relevancy 58.05%

I was having a problem with the computer keeping time while it was shutoff. I installed a new cmos battery and the time is still not keeping when powered off. Any suggestions.

Relevancy 58.05%

Is it possible to leave a CMOS battery out of a computer for 24 hours without hurting anything?

Relevancy 58.05%

I do not see a Cmos battery obviously its there somewhere, If it doesn't look like a large watch battery what else does it look like, I see nothing that can be popped off and replaced.

A:Cmos Battery??

Some older motherboards had a barrel shaped, blue backup battery soldered to the motherboard. That was common with 486 systems. In order to replace it, you were required to attach an external battery to a specific connector on the motherboard and set a jumper (maybe) to disable the original battery.
Another possibility is a CMOS ram chip with the battery built into it. Those usually were a large black chip plugged into a socket on the motherboard with "DALLAS SEMICONDUCTOR" printed on it.
Relevancy 58.05%

I have a ASUS motherboard.When my Pc star to bootup,I have a line in the end that tall me that the Cmos Batt is lower and the date and time is not accurate or something like that.What kind the battery is this one and what do I have to do to change?



A:Cmos Battery

The most commonly used battery is CR2032. If you still have the P4S800-MX motherboard (from a May post), turn off your PC and remove the left side cover. The battery is a 5 cent coin size disk near your IDE drive connectors.

You can get the battery about anywhere (I saw them at the grocery store last week).
Relevancy 58.05%

I have a Compaq Presario 7360 Desktop PC and I am not sure what kind of cmos battery it needs to be replaced with. Can someone please help me out with this. Also, how much do they cost. Thanks in advance.

A:CMOS battery

unplug the PC, even the power cord at the back
ground yourself (ie touch metal, discharge static)
open the case and point a flashlight at it
carefully pry it out, usually a clip you GENTLY pull back to allow the battery to pop out
(you do NOT want to break the clip off)

any radio shack or pc store will have them

about $5
Relevancy 58.05%

Hi everyone,
I have an NEC Versa 4230, with win95,133mhz notebook. When I turn it on it tells me the system battery is dead, and to replace it. Thing is I don't know where it is at or where to get one. Do places like circuit city sell them. Any help would be greatly appreciated. Thanks , JOE

A:cmos battery

Well I looked it up a NEC and the bad news is they say must be replaced by certified NEC site.

Either they just want to charge the money or it's not easy to do.

Could be soldered to motherboard instead of clip type which is a major pain.

Sorry, don't have any better info for you
Relevancy 58.05%

Laptop is over seven yers old and is giving messages suggesting CMOS battery needs replacing. Considering it's age what would the battery look like. I have no mannual. I havn't got to see the whole motherbourd yet but can see this much. Is it there?


A:can you see cmos battery

Make and model may help someone to help you...
Relevancy 58.05%

My CPU clock was messing up constintly on my so I wanted to change out the battery. I did that with no difficulty. When I restarted my computer all that happined was that it beeped at me the code was.. 2 quick then 9. My computer is know a fancy paper weight I can't even boot from a disk, cd or floppy)There is no signal going to the monitor I have a Matsonic Ms6260s motherboard.

Relevancy 58.05%

Relevancy 58.05%


Ive been working on this old computer and it had a bad CMOS battery. It was the kind where you put AA's into it and then it plugged into the motherboard. I replaced it, but now the hard drive settings are all screwed up. I went into the Bios Program to set everything. But none of the options matches the hard drive. I know for a fact that this computer worked before the cmos battery went dead. The options in BIOS you can only set to
Type 1, Type2, etc. There is no "USER" setting where you can just put in the numbers of heads/cylinders/sectors. What should i do?

A:CMOS battery

If you have no user or auto settings try setting the bios to type one. Hopefully the drive was originally using a drive overlay and will boot ok with this setting.
Relevancy 58.05%

I need to know which way the wires (2 of them total) go on my compaq armada 7770dmt. While replacing the cmos battery I got the wires mixed up when I put the plastic end on. Since the plastic piece only fits one way I know that it must matter which way the wires are attaached. The colors of the wires are red and white. I cannot find a schematic for the motherboard.

A:cmos battery

i cant find anything on the HP website
you may want to post the question in the support forum
Relevancy 58.05%

Well im about to take out my CMOS battery and need to know if it will reset everything that ive downloaded or just my bioes settings will it reset my password for the admin?

If i remove the CMOS battery will it clear everything like a reformat?

A:CMOS battery

Clearing the CMOS will only clear your BIOS settings like Boot order, CPU settings, stuff like that. It will not format anything, nor will it reset any passwords. Even if it is a bios password, most manufacturers make sure that it is a little harder then that to clear the password. If you have forgotten your password for windows it will not effect that but there are ways to do that.
Relevancy 58.05%

What happen when I put cmos battery in motherboard dell 745 it cannot start!!!its new battery...anyone to help me please?

A:Cmos battery

Check and make sure the battery seated correctly. Also make sure you did not jar your memory loose. This will prevent . The computer from booting also.
Relevancy 58.05%

wheres the lenovo ideapad y530 cmos battery located? anyone pls help. TY. i plan to reset my corrupt bios.

A:Cmos battery?

Anyone here who knows the location of cmos batt of lenovo ideapad y530.
Relevancy 58.05%

I recently had a major computer crash following a lightning storm and a lengthy power failure. I feared the worst and called out a tech. It turned out that the CMOS battery was dead and when the power had failed, the CMOS settings were lost.

The tech said that under normal circumstances, as long as the computer was connect to the power supply, the settings were retained but when the power failed, the settings went.

So if I just use system shut down on the computer at night, there is obviously power still getting to the computer. However I assume if if I actually turn off the computer on/off switch then there will be no power getting through and the CMOS battery takes over.

If I do that every time I turn off the compueter I assume that the CMOS battery will not last as long.

Am I correct?

Relevancy 58.05%

Question Battery.... perhaps CMOS ? Does anyone know if a quot faulty quot CMOS Battery.... perhaps ? CMOS battery the CR type can stop a laptop working This is the sequence of events - Booted laptop from CMOS Battery.... perhaps ? standby as normal Logged in Everything working as usual for about minutes Then I stopped working on the laptop to talk to someone While we were talking I noticed the laptop screen suddenly went blank From that moment forth the little darling has been as dead as the Christmas turkey My experience with CMOS batteries that are about to go play a harp is that they indicate this by displaying the wrong date and time Even then it can take days or even weeks before CMOS Battery.... perhaps ? the battery finally gives up I used my last CR a few days ago so before I go trundling down to the shops I would be grateful if anyone could tell me if a quot deceased quot CR can make a laptop suddenly die I haven t seen that before TiA T nbsp

Relevancy 58.05%

I just tried to install a new battery and broke the spring clip part of the socket. Is there a remedy? TIA, Brian

A:Cmos Battery

Unfortunately there really is no easy repair for this. It would require desoldering the old battery socket and soldering a new one in. While this is not rocket science, it does take great care and some skill to do. A minor slip or laving the soldering iron in place too long can do some real damage to a motherboard. It is best left to a technicial with the proper equipment and skill to do. I would consult your local computer shop about this repair. And it may take a referal to someone else.
Relevancy 58.05%

would it be a bad idea to replace the cmos battery in a desktop computer while it is powered on? i want to do this because it would prevent the loss of any information such as system time and some bios settings (boot sequence).

A:CMOS Battery

Yes.....a Bad Idea.......
Relevancy 58.05%

CMOS battery

What happens and what is the danger to your computer if the CMOS battery dies?

A:CMOS battery

The CMOS battery is a very low powered device, just like a little watch battery.

So don't stress, it ain't gonna kill you.

However, its needed to keep data in the CMOS. The CMOS tells the computer what processor is installed (although many computers have jumpers set to tell it this), what drives you have (diskette, hard disk, CD-ROM, and others, and importantly your hard drive's geometry), how much memory is installed, and other important data that your computer needs to know in order to run correctly....

I imagine what would happen if it completely ran out would be that the CMOS would have to be re-written to manually in your BIOS program every time the machine was powered on for anything like normal operating to occur. Certainly you would loose the time settings and would have to redirect the BIOS to redetect the hard drives everytime you powered on.

You can replace a CMOS battery quickly and easily. They are very cheap and just clip out and in to the motherboard. It resembles a small silver disc about the size of a coin.

This is assuming that your computer is not totally ancient (like a 8088, 8086, maybe 286 or something) where the CMOS battery was sometimes not removable. If this is the case then get a new computer you sad man..... Otherwise, it will cost you nothing to replace and if you are not sure of yourself a computer store will do it in about 1 minute.
Relevancy 58.05%

Is there a default in set up after replacing the cmos battery or should you take a picture with the flash off just in case?
I cannot think of any other way to know the information as print screen etc cannot be used.

A:cmos battery

Replacing the CMOS battery will probably reset the BIOS settings to their defaults. Unless you or someone else has changed the settings, that will be the same as what you have now.

You could use a camera (or smartphone) with the flash turned off to record the settings. Or, you could just use pencil and paper. (Dell typically provides a fairly limited selection of settings. That's not intended as criticism.)
Relevancy 58.05%

Hi guys My computer just started having this problem since Christmas I ve had this mobo since and this is the first time when I switch on the comp it gives me thsese messages randomly quot CMOS CMOS battery low, help? battery low quot quot Error loading drive A quot quot Error boot sequence quot quot Press F to continue or F to enter setup quot I went into the BIOS and it is always set at factory default settings even when I attempt to change them to the previous settings I had It gives me a message that says that because the CMOS battery is low my date and time and other BIOS settings will be reset to default then gives me the error boot sequence msg and still continues to load windows and desktop is messed up a bit but otherwise quot normal quot except for the sys tray that s missing icons I have never really encountered this situation before but the solution seems straightforward replace the CMOS battery only that I CMOS battery low, help? don t know where to find it I ve tried tigerdirect ca newegg ca and even a local computer store but they don t have it on their website My mobo is an CMOS battery low, help? OEM Lenovo J - ASUS M A-VM with a G chipset amp AM socket What additional details do you need to know what CMOS battery I need to buy and if possible any websites I can go to in order to find it preferrably CMOS battery low, help? Canadian due to shipping costs but I don t mind US Also my OS is win RC although that might not be relevant I really appreciate any help you can provide nbsp

A:CMOS battery low, help?

CMOS batteries are almost always CR 2032 basically a button battery taht is a available in most big box stores or electronic store. Take the side of the case off and see if you can locate
Relevancy 58.05%

could someone tell me where the cmos batter is in a dell inspiron 3800

A:cmos battery

Welcome to TechSpot! Hope you'll love this place as much as I do.

If you haven't already done it, then open up your case and look around on the motherboard for a shiny round thing that's about 1.5cm in diameter, pull it out off it's socket and there you go.
It should be near your PCI-ports or near your CMOS-jumper.
Relevancy 58.05%

I need to replace the CMOS battery.  What battery number, e.g. 2302, or part number am I looking for? Thank you.

A:CMOS battery

Hi: You would replace the CMOS battery with the CR2032 3V battery. You can get that battery almost at any store.
Relevancy 58.05%

Question. In the motherboard manual it says to use a flat screwdriver to pry the cmos battery to change it. Well, I was doing that and the cmos battery sparked. First question is, what tool do you guys recemend. So, the motherboard cmos holder doesn't break, and so it doesn't spark again?
Second, is a spark from a 3v cmos battery harmfull to me, if it came up the screwdriver? I don't even know if it did, but I was a little freaked out by the spark, because it didn't say anything about it possibly happening. Of course, the pc was not plugged into a wall or anything. It, was just the battery itself.

Thanks everyone

A:Cmos 3v battery

Probably ran into a residual charge on the power supply.
Want to make sure not to short the 2 battery contacts or
short it to any metal on the case.
You can usually discharge a lot of that by pressing the power
button with the power supply turned off or unplugged.
The battery holder should have metal clips on one side.
Press on the opposite side of the battery to push it against the clips
then lift it out.
The clips are spring loaded to hold it in.
Relevancy 58.05%

Hi guys and gals, quick question. I have a HP Pavilion G7 laptop that was giving me some cmos error messages so after some ridiculously rigorous searching, I found the battery. My question is, does the numbers on the battery mean anything? Meaning, ive found HP pavilion Gy batteries on line for sale but the numbers on the sticker on the rubber housing dont seem to match. Im wondering if that is just the warehouses part ID. This one says, "1126. 12." If anyone is familiar with these please let me know. Thanks

Relevancy 57.19%

I need to replace the battery on my laptop. As I read elsewhere, I too can't find the password to access an old machine. This is really sad though as it has always been my computer - though I've not used it for a year or so. Age! I actually need it now to store digital images when away for some time. It's a Compaq and I'm not sure how to get into the case. Any advice would be much appreciated. Thanks

Relevancy 57.19%

when replacing dead CMOS batteries, are there different types depending on the mobo? or are all of them basically the same?

A:CMOS battery replacement

Hello and welcome to Techspot.

The CR2032 Coin Cell Battery is the most widely used, but isn`t the only design available.

Look HERE for some different types of batteries.

Your mobo manual should tell you which type of battery to use with your mobo.

Regards Howard :wave: :wave:
Relevancy 57.19%

Does anyone know where it is located on a Goldfish3-GL8E

A:Motherboard CMOS battery

It's hard to tell from the pic I found, but it appears to be vertically mounted just beneath and slightly to the right of the motherboard main power socket.
Relevancy 57.19%

our 6592G travelmate of around 6-7 years is losing the date and time can anyone let me know the step by step to replace and or a youtube film to show the work being donei have the necessary tools and anti stat bandjust dont want to go too far in disassembly unneccesary cheers GG

A:cmos battery change

i am also going to do an upgrade of ram so i am prepared to strip the thing downbut a piece of guidance would help....? got a lot of views here.... cheersgeof
Relevancy 57.19%

Hi, my laptop is stuck at the BIOS screen requesting a password when none was assigned, i've troubleshooted this to be a manufacturing error and I need to short out the CMOS battery the model is a Toshiba satellite P205D-S7802. How can I get to it to short it out?

A:Need to short out the CMOS battery

Try searching the Toshiba support site for specific instructions for your motherboard on how to reset (not short out) the CMOS battery.

Relevancy 57.19%

Hi My mum has been having problems with her Battery? CMOS Solved: computer for a few months and I am just wondering whether it may need a new cmos battery The first problem was a regular BSOD which said there was a registry error and to Solved: CMOS Battery? check new hardware software was properly installed that s all I can remember Also the sound card drivers seem to have stopped working and despite re-installing them the sound still appears not to be working I heard that when the cmos battery is low hardware drivers can stop working so thought this might be revalent The main thing which suggests to me that it might be the battery is that the time is always wrong but more recently it has begun to take hours to start up blank screen for ages before booting I ve never come across this problem before but it sounds to me like it could be the battery What do you think Thanks in advance Jon nbsp

Relevancy 57.19%

Hello friends,

I am in dire need of a new CMOS battery or "RTC" battery. I ordered a new one and as luck would have it I got a laptop LCD cable instead. My question is the following.

Is it possible to buy a new CMOS battery without the laptop cable and wire my own CMOS battery? I could use the cable from the dead CMOS battery and wire it to the new battery. Is this possible, It seams like a fairly simple thing to do. Anyone have any input or experience with this?



A:Laptop CMOS battery

What is the laptops make and model? Serial number or Service Tag would also be nice
Relevancy 57.19%

I have a Dell Studio 1737 win vista.I had to take it down to motherboard and I notice where the cmos battery goes,the part that holds it in place, on one side it was not connected to motherboard.I'm am wonder do I need to solder this back to motherboard are is this the way it is supposed to be.I went to manuel but cannot see the part that the cmos battery goes in to see.Thanks for any help anyone can tell me are show me.

A:Solved: Cmos battery

A picture would be handy so we can see what you can see.

Are you experiencing any issues? Why did you have to "take it down to the motherboard"

As a quick answer - I highly doubt you will have to do this.
Relevancy 57.19%

My PC is about - years old and I would like to change the CMOS battery on the motherboard before it Battery CMOS Replacement fails instead of after it CMOS Battery Replacement fails My CMOS Battery Replacement question pertains to finding out if I can change the battery with the PC quot On quot so I don t lose my BIOS settings Can anyone tell me if the motherboard powers the CMOS without the battery in the clip as long as the PC is quot On quot In other words if I have the PC quot On quot and remove the CMOS battery will I still lose the BIOS CMOS Battery Replacement settings because no voltage would be going to the CMOS chip Or is voltage supplied to the CMOS even without the battery as long as the PC is quot On quot My motherboard is an ABIT AT MAX VIA KT - Another thing I thought about doing was changing the battery with the PC quot Off quot but feeding volts to the battery clips to keep voltage on the CMOS as I remove the old battery and install the new battery This is what many auto dealers shops do when changing a car battery so the car s radio doesn t lose its channel settings and theft code This would be done by clipping leads from a spare CMOS battery to the battery holder which would supply volts in parallel with the old battery prior to removal and during the few seconds before a new battery can be installed Any thoughts on this Also does anyone know which battery my motherboard takes It looks like a CR but I m not absolutely sure Confirmation would be helpful Thanks nbsp

Relevancy 57.19%

A few days ago my PC battery CMOS dying? started making really annoying grinding noises CMOS battery dying? I restarted my computer and it said that I had a CMOS checksum error and my computer fans started going really fast and then slowing back down to their normal speed The red computer light on the front is barely blinking at all I guess I need a new CMOS battery But my question is the processing grinding noise I m hearing does that have to do with the CMOS battery dying It started at the same time as when I started getting these errors but I haven t found any information on irregular noises that correlate with a battery dying I don t get what could be making the noise because it s a processing kind of noise not really a fan I m pretty sure it s not the hard drive Also will it damage my computer at all if I can t get the battery replaced right away I m obviously running it with a dying battery right now help nbsp

Relevancy 57.19%

Good morning sir, I have hp pavilion a1516in media centre pc with windows 7 installed. While replacing cmos battery i broked the pin through which negative terminal of my CR2032 lithium battery is connected. When i contact shop they told me to replace motherboard. So please tell me other options for repairing. Will i have to replace motherboard?

A:Cmos battery socket

If a repair shop told you to replace the motherboard, they must have felt that there was no other options.  Since the computer is so old, it may be difficult to find a motherboard to work with it.  My only other suggestion would be to take it to another repair shop to see what they have to say. Please click the Thumbs up + button if I have helped you and click Accept as Solution if your problem is solved.
Relevancy 57.19%

I've lost my CMOS battery for my sisters ASUS A8V-VM SE motherboard. Can i use any old clock battery or could someone tell me what type/ voltage etc.


A:Lost my CMOS battery

You need this:
CR2032 3VLithium CellCMOS Power
CR2032 3VLithium - Google Product Search
this is described in a pdf for the manual
ASUS A8V-VM manual - Google Search=
Relevancy 57.19%

I have a ASROCK 4Core1600-GLAN motherboard 4GB ram running win 10 pro.
Changed the heatsink fan because it was too dirty to clean and while I was about it replaced the CR2032 battery because I had a spare.
Unfortunately the battery hasn't responded as I was hoping. Every time I boot up the system I have to enter the BIOS F2 and reset the time...
I had an extra battery which I replaced this morning. levering up the metal contacts on the base of the battery holder. Just to ensure contact but to no avail. Still have to press F2 on startup - though restart works as it should without insisting I open the Bios.
Have I broken something? Or what should I look for?
Can I solder a new battery in place?
The computer works fine once started but I would like to solve this riddle if possible.
Thanks for the suggestions,

A:Cmos Battery Not Connecting...

Soldering batteries typically are not a good idea because it requires too much heat to make the solder bond to the battery. And that heat can then damage the battery, or the battery socket. Did you damage the battery socket when you pried out the old battery? While rare (I think twice in 25 years), I have had a bad CMOS battery right out of the new packaging. Have you tried a third or the original battery? Do not touch the new battery with your bare skin as skin oils promote corrosion and attract dust. I put a clean cotton sock over my hand. If re-inserting an old battery, be sure to clean it with the sock first.

Are you selecting "Save" and Exit after you set the date and time?

And most importantly, are you unplugging the computer from the wall and touching bare metal of the case interior to discharge any static in your hand BEFORE reaching into your computer innards and touching anything else?

I don't understand how a heatsink can be "too dirty" to clean. A blast of compressed air is typically all you need. If not enough, a soft brush with a blast of compressed air. And that can be done without removing the heatsink. But if the cooler has been neglected for too long, and it has been caked with dust and dirt along with oily pet hair and dander (cats are the worst) and/or cigarette smoke residues, then you can pull the cooler, remove the fan and dump the heatsink in a sink full of hot soapy water or even run it through the dishwasher. The dishwasher soap may discolor the anodized finish but it will thoroughly clean it without degrading the heatsink's heat transfer efficiency.

Did you ensure you connected the heatsink fan power connector properly?
Relevancy 57.19%

hello, I am kinda new to computers anyways I was trying to reset my bios password by removing the battery and i broke the clip that holds the battery down any suggestions on how I can fix this.

A:cmos battery holder

What motherboard make and model is it?

Also, there is (free) software out there to reset/erase your BIOS-password. Just set up a Google search.
Relevancy 57.19%


A Texas Instrument's 'Extensa(sp?)' laptop from 1997/1998 needs a new battery (CMOS). Can anyone offer guidance as to the precise location - and access to that?


Relevancy 57.19%

lately when I boot up computer (pentium)
I get a message that -cmos battery failed-
To continue I have to press F1. Then Windows starts to boot, stops to let me put in the correct date, then continues to load Win 95.
When I boot up again, same messages.
Where can I buy a battery? and where is it located?
Should I remove the battery when I find it nad try to match it that way or are all batteries the same.
Confused and needs help.

A:cmos battery failed

They are located on the mother board and may look like a watch battery(disk)or like a small AAA battery and while some may be in holders, some older ones were soldered in place. If you feel comfortable doing it, with the power off, open up the computer and look for the battery. If it is in a holder, you should be able to replace it. If it is one that is soldered in place, it may need to be replaced by a professional repair person so as not to damage the MB when soldering in the new one.
Relevancy 57.19%

Hello, I recently ran into some problems where I couldn't access the BIOS setup... I searched up solutions for this on the Internet and many people said to take the CMOS battery out and then place it back in. However, I CAN'T FIND THE BATTERY!!! Any help would be appreciated!!!! I'm on a Lenovo Yoga 3 Pro.
Relevancy 57.19%

I have a laptop vintage HPze CMOS Solved: Battery . . . and I was Solved: CMOS Battery . . . wondering how much life is left on the CMOS battery Is there a way to tell some monitoring software or something BTW I m NOT talking about the laptop battery which most monitoring software will read I m not having any trouble with the time and date and the POST is not giving me any warnings so it s OK now but I saw a thread recently that said the normal lifespan of those things is to years That was for a desktop but I m assuming it s around the same for a laptop if there s any difference whatsoever I have another laptop Winbook XL - vintage and the CMOS battery went out on that a few years ago It still will boot on AC Solved: CMOS Battery . . . Adapter but of course the BIOS info has to be re-entered every time in addition to the time and date Or at least it booted last time I tried but that was a couple of years ago maybe the CMOS battery still had a trickle cause I really don t know if these things will boot when the CMOS battery is completely gone will they I assume they will with the AC Adapter And BTW I wrote down all the CMOS settings before the WinBook CMOS went out I did it when I noticed the clock started to loose time which was a warning The AC Adapter will charge up the CMOS Battery but eventually it will go Now I do run this thing always with the AC Adaptor so maybe that s why the CMOS Battery is still alive because it s always being charged Anyway the reason I m asking this question is that I really don t like to crack the case on these laptops it s a lot easier to do on a desktop when all you have to do is remove the cover I have the manual for this thing but the design is such that all the guts MOBO CD DVD Display Heat Sink Fan etc have to be removed to get at the CMOS Battery And I don t know if the thing is soldered in or in a slot Getting to the CMOS Battery may be easy to do on a desktop but on a laptop unless you re mechanically inclined and I m NOT it s a bear And I ve never done that before I replaced the HDD one time but that s in a slide out tray and that took me several hours to do it should have taken only about minutes but as I said I m not mechanically inclined and I dropped those little tray screws on the carpet among other things If the CMOS Battery is about to go which I assume it is then I ll either take a look at the manual again or else just make an expensive boat anchor out of this thing and get another Of course even if I try to crack the case and get at the CMOS Battery I may end up making a boat anchor out of this thing anyway Questions in summary Is there monitoring software that will tell how much life is left in the CMOS Battery Can laptops boot with the AC Adapter when the CMOS Battery is dead TIA nbsp

Relevancy 57.19%

What battery I need to buy to replace CMOS battery (BIOS loosing date/time). Any traps in replacing?
Relevancy 57.19%

Hi all!! Hope i'm post this in the right forum. My daughter just bought my grandson a used computer. It had win 98 on it and we installed winxp. When i turned the puter on this morning i'm getting a message that says cmos battery is low. What can I do about this??? any help would be appreciated. thanx.

Relevancy 57.19%

What is the replacement battery number for the AS7741Z-4643 CMOS RTC batttery?

A:as7741z cmos rtc battery

cr-2032 3volt lithium coin cell. Or you can buy the pre-wired coin if you're not comfortable wiring your own. Jack E/NJ
Relevancy 57.19%

So I have 2 audio recording rigs I built, one is maxed the the other I've been recording with for about 6months now. The maxed out rig has an Asus motherboard and the Comos battery is probably dead by now. It wont power on because of this. I need to replace it so badly but what Im wondering is will I lose the memory on it? I definetely assume that the harddrives are not affected by the battery but Im not 100 percent there.

Relevancy 57.19%

I have an interesting problem.
During POST my Sony PCV-V200G desktop gives me a message "ESCD updated Successfully".
I have not changed or added any hardware. Have not changed any BIOS settings.
This message just keeps appearing every time I boot or reboot.
I've reset my bios back to default settings and the message still appears.

I'm thinking my CMOS battery is dying .

Make any sense to anyone out there ?


A:CMOS battery failing ?

It shouldn't be anything to worry about unless something isn't working. It likely has to do with pnp in the bios or a usb device.

All the cmos battery does is save your bios settings, so if you change a setting you can save it, rather than making the same change every time you start the pc.
Relevancy 57.19%

I'm looking for the cmos battery on my old Presario R3240US laptop.  I opened it up today, got all the way done on the back with the heatsink off, but didn't remove the framework.  I also removed the keyboard, but didn't see anything from the top either.  I hate to take it completely apart just for a cmos battery.  It no longer keeps date or time so I know it needs one.  Thanks for the info.

A:r3240 cmos battery

Service Manual: Manual I can't find any picture of or reference to the CMOS battery. It has to be soldered to the motherboard, I'm afraid.
Relevancy 57.19%

heya battery CMOS problems ive been having problems with my CMOS battery problems cmos battery lately well at least thats what i think it is the problem starts whenever i unplug my CPU cable from my wall socket or whenever i switch off the socket whenever i load CMOS battery problems up my computer for the first time after i unplug my CPU cable before i reach windows a msg appears - gt CMOS settings not set - press F to load setup - press F to load default values so when i press F i enter setup and have to enter my date time again cos it was defaulted to am when i hit F i go straight to my windows login screen with my time and date defaulted ive tried countless of times removing and reseating my CMOS battery but it just keeps happening this only happens whenever i completely disconnect my CPU from the power supply if i just shut down my PC normally and load it up again everything works fine ive also replaced the CMOS battery with a new one but still the problem persists any help would be much appreciated nbsp

Relevancy 57.19%

Hi Folks I ve just bought a quot new quot computer IBM A battery? Solved: CMOS Type -PBU It had no hard drive or OS but had valid XP COA so I did a fresh install of XP onto Solved: CMOS battery? a hard drive that had old data which I didn t care about When the laptop arrived I needed to reset the date and time It was on Pacific Solved: CMOS battery? Time-I m on Eastern Time Daylight Savings I had some issues getting online so went downstairs and hooked up to our Ethernet cable Before hooking up I noticed the time had reset to Pacific Time After downloading and updating Windows XP Service Packs virus protection and anti-malware I reset the clock again That was a week or so ago I told the seller about the issues I was having which have since been resolved THANKS to you folks As for the clock needing to be reset twice he suggested that the CMOS battery might be ready for replacement soon My questions are How big a deal is this Does the CMOS battery do anything other than the date and time If it dies will it take any special skills to replace and if so please specify Does this indicate an issue with the motherboard or anything Thanks for any guidance you can give once again nbsp

Relevancy 57.19%

our 6592G travelmate of around 6-7 years is losing the date and time can anyone let me know the step by step to replace and or a youtube film to show the work being donei have the necessary tools and anti stat bandjust dont want to go too far in disassembly unneccesary cheers GG

A:cmos battery change

i am also going to do an upgrade of ram so i am prepared to strip the thing downbut a piece of guidance would help....? got a lot of views here.... cheersgeof
Relevancy 57.19%

Tried to replace my cmos battery with one i bought from Asda ( lithium cr2032 3v)

Maybe i am doing something wrong ;but restarting the pc gave a beeping sound, so i replaced the original battery and the pc started ok except the date and time seemed to have reverted back to the date it was made.

Could this be a battery compatibility (they are both lithium cr2032) ?

Must admit its the first time i've changed a cmos battery in all the pc's i've had

pc is a Hp md8070uk media centre which is about 4y old now.

any ideas what's happening?

Regards Roy

A:cmos battery replacement

Welcome rsinbad to the forums.

Whenever the battery is removed from a motherboard, the bios resets itself to the default time,date and other options. You need to go into your bios and set the date and make sure that all the settings are what you want them to be. Some have an option, after you have set the date and time to setup for maximum performance or you can leave the other settings to their default.

Relevancy 57.19%
Relevancy 57.19%
Relevancy 57.19%

Can anyone help with cmos battery type for this model desktop, please?

A:cmos battery cq5047

Try this check the model number of the laptop  against this NEW HP COMPAQ G50 G60 G70 PRESARIO CQ50 CQ60 CMOS Battery The battery will be accessable via one of the bottom covers normally same hatch as the memory/wireless card
Relevancy 57.19%

Everytime I boot up my mother's computer it displays this message:

CMOS battery low
checksum bad

She says she replaced the battery, and the message still keeps coming up. Any ideas as to what would be wrong? Thanks!!

Relevancy 57.19%

After a long time I was finally able to figure out the problem about My 9 years old Acer Aspire, turns our my CMOS battery is no longer in use. Now got a quick question for you , How much would it cost to purchase a new CMOS battery and does it have to be a specific CMOS battery or could it be any CMOS battery? Video will be uploaded shortly.

Acer Aspire CMOS Battery? - YouTube

A:Would I need to get a specific CMOS battery...

Hello Rawad,

The standard CMOS battery would be a lithium button cell, type CR2032. They usually only cost a few dollars for one.
Relevancy 57.19%

In regards to my Vista Home Premium I've had problems with it possibly due to a bad or dying CMOS battery & possibly defective battery as I posted in here
The most recent time was mentioned here
Ok, I know I can google for info but since I trust the knowledgeable people in here, I'm asking for help because I want to find out if it'll be worth getting it fixed/repaired or getting an iPad instead.
The Vista laptop was 2nd hand
The Vista battery is VGP-BPS9/S 11. 1V/4800mAh

A:CMOS & Laptop battery

Get the laptop fixed or not? If yes, a ball park guesstimate as to how much.
Relevancy 57.19%

How often should the CMOS battery be replaced in a laptop.Have a Toshiba Satellite Pro L300-1FK which was three years old last August and is working fine.I contacted Toshiba to ask what type of cmos battery was installed but they were unhelpful and refused to give me make and model of battery,just referring me to their service engineers for them to do the work.

A:Replacing CMOS battery

"If it ain't broke, don't fix it"

The life of the battery will depend on how you use the laptop (or any PC). If the unit sits unused and unplugged for day or weeks at a time (the battery removed from a laptop would be equivalent) then the 3v battery will run down much faster than a PC that is always plugged in and/or the laptop battery is always in and charged.
I have 10 year old PCs here with the original batteries and they are still reading 3v+.

Many laptops use the same 3v battery that desktop motherboards do, but some use a proprietary design. If you can find a "Service Manual" online for your laptop you could find out quickly which you have.

But here is the fast test for your laptop:
Shut it down.
Remove the laptop battery.
Let it sit overnight.
Put the battery back in, turn it on and go into the BIOS settings. If the time is still correct the 3v battery is working. If not, then it is time to replace it.
Relevancy 57.19%

if a cmos battery is dead or very low battery, can it cause problems of a pc not booting up properly as in no signal from monitor, no key board activity an not loading up? ive had this problem a few weeks ago but after taking everything out and plugging it into a different outlet it worked until power went out for around 12 hours today. power did come on for like 5 mins but went back out, pc was in the process of booting up when power went out again. also bear with me the laptop im on many keys wont work due to a curious cat and im using the on screen keyboard to type. thanks for any help you all can give!!!

Relevancy 57.19%

It's that time when the clock on my PC is starting to slip. Can I just pull the CMOS battery out and take it to a shop to buy a replacement, or is there more to it than that?
Thanks in advance.

PS - Oh ya, I'm wondering what people think of A+ certification. Is it worth the money and is it valued in the industry? Thanks again.

A:Replacing a CMOS battery

Turn off your system and umplug it. Then you can remove the battery to replace it. You can buy a replacemnt at any discount store. Usually just a calculator battery. I thinnd cr2032 is a standard cmos battery but dont quote me on that.
A+ is a good intro to training. It is actually a prerequisite to several other certification programs. I am A+ and had to be to get certified for other things and to work on certain types of equipment and not void the warranty.
Good Luck,
Relevancy 57.19%

I am working on my sister in law's Dell Dimension 4700 and I cannot find out what CMOS Battery I need to buy.

Can anyone please help?

A:Solved: CMOS Battery

The cmos battery usually has a number on it.
CR2032 are pretty standard for computers.
Relevancy 57.19%

Hi friends

Mine PC is running on a AMD quardracore, Gigabyte GA-MA785GM-US2H, 4 GB DDR III 1600 Mhz Corsair Ram & Power supply along with 8400 GT nvidia . This PC has been OC to 3.2 ghz and is currently working at 3.2 ghz.

Recently I was getting BIOS notification to change the battery as everytime the BIOS had to be reset.

I changed the battery 3 days back but again after a day I again started getting the same notification of changing the battery.

Pls tell where could be the problem.


A:CMOS battery problem

Was the battery you replaced the bad one with brand new? Also make sure it is a 3V battery and to be safe, make sure it has the markings 'CR2032" on it (that is what mine has). Other batteries of the same size and voltage MAY be fine, but I can't really vouch for them. Also, if you have one, it might pay to check the batteries voltage with a multimeter.

Also, if you buy a new one, it might pay to make sure that it is meant for a computers motherboard, as some may or may not be, just to be on the safe side. I don't really know a great deal about these batteries.
Relevancy 57.19%

I opened g 575 lenovo laptop but unable to find the cmos battery location ..has anyone come across the same issue ?

Relevancy 57.19%

I am hoping that some of you guys may have some information that may help me.
I need to replace the cmos battery in my CTX 700G laptop, but CTX stopped providing support for these a long time ago, and I have no way to get any sort of service manual for it.
the battery nust be well hidden because I cannot see it after removing the keyboard, and I do not want to dissassemble more than I have to in order to reach it.
Any help will be appreciated.

A:CTX laptop cmos battery

Welcome to TSG!

Not sure where it is but, this page shows a picture of what you are looking for. The green one part way down.
Relevancy 57.19%

Mod Edit:  Split from - Hamluis.
Hello all,
I was trying to install Windows 7 Starter from a bootable USB and I got this same error. Upon reading this threat, I found the solution. In the boot-up list in your BIOS menu, you have to remove the Atheros boot agent / LAN from the list.
It will then boot to whichever boot-ready device you've got.
I know this doesn't solve the entire issue of this threat, but at least it'll remove this pesky error.

A:PXE Error, CMOS Battery?

Sounds like a dying bios battery.
Relevancy 57.19%

Can a dead cmos battery slow pc , because my pc is just 5 month old and it's slow.
4gb ram
3 cpu 2.10ghz
512 mb ati radeon ?

Relevancy 57.19%

Howdy Friends & Neighbors,

My Sis just picked up a used Packard Bell w/W95. She asked me if I'd help her install 98. I said "of course". I started it up, and it seemed to go through at least a partial setup (running the memory, and that sort of stuff), but then it went to a prompt asking for a password. CMOS password? This is what I believe it wants. I've tried the "bell9,bios,cmos" etc..... nothing will get me passed this stage... Now .... If I remove the CMOS battery to dissolve whatever password was there... will the master cd restore it, or would there be a problem with the BIOS/CMOS at all?

Relevancy 57.19%

Once I set my clock on my WinXP Home machine and restart it or shut down the time is always wrong once it is booted back up. I believe the reason is because of a dying CMOS battery. Does this sound correct? Also could having a low CMOS battery cause Windows to crash and restart? Thanks for your help!

A:Solved: CMOS Battery

Yep, if the time stops when you power down, that's a classic sign of a failing MB battery. However, that shouldn't cause Windows to crash, that's a different issue.

I'd start by replacing the battery, then checking the connections and seating of all connectors, memory modules, and expansion cards.
Relevancy 57.19%

I just changed my CMOS battery and now my computer screen is jumping all over the place, like the fine tuner is messed up! I wore a static wrap, rubber gloves and I turned off the computer. I even reset my date & Time, and checked my monitor cables to see if they were lose, but their OK. Any ideas on why my computer screen is jumping around? I even checked the battery to see if it was good, and cleaned the battery, it's OK! Please help!

A:Changed Cmos Battery

When you take out the motherboard battery for a length of time, the BIOS returns to default settings.
First, did you reset the date and time in the BIOS. Does your computer have onboard video or a video card? did it used to have onboard video, but you added a video card?
Also check you refresh rate in the monitor's properties
Relevancy 57.19%

Good Evening All,
Getting ready to change the board battery. Read the "How To" section, but might not be understanding. I went into set up mode to write down the BIOS settings, but not sure what I'm to be writing down. The only thing I see that refers to BIOS is the Core v6.0 and Revision 3.0 5/2002. Is there something I'm missing?
Thanks Much,

A:Changing the CMOS battery

There's no need to write down CMOS settings, that's an instruction that used to be necessary long ago.

When the battery is replaced properly, the CMOS defaults (designed to assure system boot) will take over.

Then you boot into the BIOS...set the data and time and save all changes...hit F10 or whatever to save the changes...and you should be good.