Windows Support Forum

cmos battery replacement

Q: cmos battery replacement

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

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Preferred Solution: cmos battery replacement

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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.

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i have a 486 with a dead cmos battery. i have several new batteries of the rectangular, removable type (stuck in there with velcro), but this one is soldered in. is it possible to plug in a rectangular one and just leave the dead, soldered-in one there? thanks!

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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:
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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

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I have an old computer, and I figured while I'm replacing certain things, why not put in a new battery for the CMOS. Is there anything I should consider before I do so?

The way I see it, the little 3 volt battery has been bleeding power for years and years, and if I replace it, I'll basically for all intents and purposes never have to worry about it again.
And no, there aren't any problems with my CMOS (that I know of), but I like to keep things in tip-top shape if I can. Besides, Murphy's law states that as soon as I close everything up, the battery will finally fail.

Any pertinent input in much appreciated.

A:Any complications with CMOS battery replacement?

I did it to any machine more than 3 years old that came into my shop. Just standard maintenance and wrote the date of replacement on the batt.
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My CMOS battery is dead, can anyone advise where I can buy a replacement from one.



A:Replacement CMOS battery for Equium L40


I?m afraid the RTC battery is soldered to the motherboard. Don?t think you could remove it easily.

What you can do is to charge the battery.
In order to charge the RTC battery successfully, the main battery and AC adaptor have to be connected to the notebook. Additionally the notebook has to be powered ON for about 18-20 hours.

By the way: it?s a NiMH RTC battery supports 3V output voltage and 14mAh capacity
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I get a Date & Time not set error on boot up, and have to press F1 to login, where I then have to reset the time manually. The fix appears to be that the CMOS battery needs to be replaced, but what type/size of battery is fitted to this model? I don't want to open the computer up more than once, so don't want to have to do this just to check the battery model. Thanks David
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Hi guys,

I'm new on forum procedure, so please bear with me if this is in the wrong place.

My desktop is a predator from Power Computing running an AMD dual core 3,800 2.01 GHz on a Asus A8N-VM CSM motherboard 960 MB RAM.
The software is XP Home with SP3.

I replaced the CMOS battery recently because it had run down. Everything went smoothly,I rechecked the bios, everything ok. the computer booted up and started ok, but with one exception; I had lost the post screen.

Normally, when the system boots it presents the post screen options on the monitor, but now it starts with a splash-screen from Asus, The Asus screen gives the option to press del or F8, I feel this is an unwanted intrusion, but I don't know how to get rid of it and return to my normal post screen.

Any suggestions out there?


A:Problem after CMOS battery replacement

Typically...there is an option in the CMOS settings...something called "quick boot" or whatever...that determines whether you see the POST check or not. Take a look at your current BIOS settings.

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Did a search or two and didn't find this info anywhere on here so thought I would post it for any who need to know how exactly to replace the CMOS battery in their IBM Thinkpad 600 series notebook.

The above link will take you directly to the instructions.

Possible error numbers/messages that point to this problem:

0161 Dead Battery
0173 Configuration Data was Lost
0192 Fan Error
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I Have A Rather Old Pc Chips Motherboard With Replacement [SOLVED] Cmos Battery A Dead Cmos Battery I Am Told That The Battery Cannot Be Replaced As It Is Soldered To The Board And Besides That Is No Longer Available However My Local Computer Shop Has Advised Me That The Designers Of The Board Were Aware Of This Problem And Left Access To The Battery Via Pins Which Protrude From The Board I Have Assembled A Volt Battery Replacement x Batteries In A Caddy But Am Now Stuck As To Which Pins To Connect To There Are Four Pins All In A Row In Such A Way That A Plug Could Be Connected To Them Once Again My Local Computer Shop [SOLVED] Cmos Battery Replacement Have Advised Me That It Is The Two Outer Pins Which Should Be Used But I Do Not Know The Polarity Can [SOLVED] Cmos Battery Replacement Anyone Advise The Motherboard Is TX PRO PCI Chipset PC C TX NC Es I Have Enclosed A Photograph Of My Dilemma Any Help On This Matter Would Be Greatly Appreciated Thanks nbsp

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Recently....every time I turn on my laptop I get 5 beeps and the clock and date needs resetting. I think it's the internal battery that has probably gone flat.
Is a battery replacement going to mean me having to take the computer to bits to get to the battery? Any other tips that anyone has to get to the battery or anything to stops the beeps!
Many thanks indeed.

A:Inspiron N7110 CMOS battery replacement?

Usually a faulty CMOS battery won't produce beeps -- a faulty clock chip, however, will.  Run the Dell diagnostics on the system (F12 at powerup).  If you see an error relating to a bad system clock chip, it's the mainboard that will need to be replaced.
The CMOS battery is not even used if you have a charged, main battery in the system or the AC adapter is plugged in.
Changing the CMOS battery requires quite a bit of tear-down (removing the system board):
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I "inherited" an NEC Versa laptop, model 4230. We finally got it up and running but I think we need to replace the CMOS button battery (I get a "System battery is dead" error message). I have the right size/current/voltage battery but cannot access the board. I realize I may have to solder leads on the battery to secure it properly to the board. Is there a special NEC tool to take this cartridge/mother board out? There is a lock/unlock icon next to a small hole of this cartridge. All of the other cartridges do not have this oval shaped hole. What shape is the tool? How can I change my battery w/out getting to this board?

Thanks in advance,
PamK in San Jose, CA

A:replacement of CMOS battery in NEC Versa laptop

The "lock/unlock" symbol next to an "oval hole" sounds very much like the standard Kensington Lock provision on a laptop.

This is for attaching a locking cable to lock the PC to a desk, and prevent theft. Its not a lock to get access internally for the laptop.

The "system battery" will be the little button cell or similar that is located on the motherboard of the laptop, probably deep within the internals.

Taking a laptop apart (and getting it back together) without damaging the laptop can be a complex and difficult operation, and you really need the full service manual to find out how its done for that model. I would suggest taking it to a shop.
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I recently changed my graphics card. While the card was out, I decided to change out the original year 2007 battery. I had no CMOS problems before, but I thought that since the battery was over 5 years old and buried under the graphics card I should change it. Now I get a checksum error telling me that it will reset to the defaults. Is there a driver that I should have installed? The error does not occur at every restart, only when I unplug the computer. I checked the voltage of the new battery and it is good (3.2 volts). There are no problems at all with my computer, unless I unplug it.

Dell Inspiron 530, Windows XP Pro SP3

A:CMOS checksum eror after battery replacement

A graphics card replaced along with the CMOS battery replaced would trigger the hardware reset only once.
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I would like instructions for replacing the CMOS battery in my Fujitsu C340 laptop computer. I kinow it is a small, round battery with two legs on it. Thanks in advance.

I have no idea where it is located either. I've looked under the keyboard but didn't see it. The only opening on the back is the battery door (plate).
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Hi Everyone,

I have a Portege M750 Model PPM75A-007010 and I need to change the CMOS (RTC) battery.

Can anyone share with me
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- is this the normal round battery and if you can tell me the battery number?
- or where can I purchase this battery and price range?


A:Portege M750 - CMOS (RTC) Battery replacement


Normally the RTC batteries in these models are rechargeable.
If not yet done, please let the unit run overnight (not off, not hibernated, not standby - but ON) and see if the issue is resolved.

I think the charge-description/characeristics of the RTC battery is mentioned in your users manual.

BR Tom
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After about 30 minutes of trying to figure out what was wrong,I looked at the clock again-and it was set to the wrong year. Reset the clock and BANG! everything worked perfectly! I know it's been a while since I worked on an XP machine- but I don't ever remember that happening or why?????

A:XP CMOS battery replacement- clock setting heads up!

Large time discrepancies can flag things like security issues, so it's probably going to be down to something like this rather than anything in XP itself.
For example if you have an internet security suite that does look-ahead to destination websites, all the security certificates can seem to be invalid if the system date is way off.
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A:Satellite Pro S300-120 won't start after CMOS battery replacement


>It either a) appears to turn on, spins up the disk & CD drive, cooling fan goes to 100%, then flashes the

POWER ON led once green then twice orange, at 1/2 second intervals, with no response from LCD or keyboard.
Usually if the power voltage in abnormal of the power supply malfunctions the DC IN LED will flashes orange.

So in my opinion it looks like a problem with the motherboard :(
Possibly you will need to replace the mobo ;(
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A:CMOS/Checksum error continues after battery replacement

Sounds quite confusing all the things you tried.

Checklist ...

1. Is the replacement battery *fresh* (3 volts for CR2032)?
2. Reset CMOS (via jumper).
3. Go through all bios settings and check they are suitable.
a) Try selecting LOAD BIOS DEFAULTS setting first.
b) PnP Configuration Setup\Reset Configuration Data
- Set this to 'Enabled'.
4. Try reseating all components and connections.

If all else fails then its perhaps the mainboard could have been damaged by 'static' if adequate precausions were'nt taken while working on it.:blush:
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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.
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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?
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A:need cmos battey replacement

kramredarts said:

My desktop PC has a 3 volt lithium coin battery on the mother board. The battery was mfg by toshiba and has the number CR2062. I can't find an exact replacement. Is there a generic equivalent that I can safely use?Click to expand...

Yes you can use those energizer lithiums 3V.Just replaced one accually!
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A:CMOS Battery

Norm. To better help you we would need the exact model number or product number of your laptop/desktop??? REO
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Hi everyone,
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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
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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.
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A:Cmos battery?

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

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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.
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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.
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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.
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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
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A:cmos battery

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

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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.
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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.
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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 ?

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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.
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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.)
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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.......
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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.
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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).
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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.
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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

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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.
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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?

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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.
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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...
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A:Battery Replacement Toshiba OEM or Battery-Biz

Could you provide links?
I think with batteries the big thing is Watt/Hours. (Don't quote me on that tho)
You might be better off using the same battery as the one you had before, simply for the sake of reliability.
It also will depend on what you use this laptop for.
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I have been advised to replace my CMOS battery. A few questions.

Is the CMOS battery the same thing as the RTC battery?

I understand that some CMOS batteries are soldered in. According to my manual, however, mine does not appear to be soldered in.

What precautions need I take before replacing the battery? Is there possible data loss?

What else should I know?

Thanks a bunch.

A:Solved: CMOS battery

Also, where would you recommend purchasing a CMOS battery?
How much can I expect to pay for a compaq laptop about 6 yrs old?
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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 ?

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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.
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Tech CMOS battery placement Support Guy System Info Utility version OS Version Microsoft Windows XP Home Edition Service Pack bit Processor Intel R Pentium R CPU GHz x Family Model Stepping Processor Count RAM Mb Graphics Card Intel R G GV GL Express Chipset Family Mb Hard Drives C Total - MB Free - MB Motherboard ASUSTeK Computer INC Goldfish Antivirus McAfee Anti-Virus and Anti-Spyware Updated Yes On-Demand Scanner Enabled I reciently removed the RTC to check voltage and didn t notice CMOS battery placement polarity position in the vertical rack it goes into I installed it with the negative side facing right I havent noticed any problems I did look at motherboards online and an Asus website that only had an educated guess CMOS battery placement answer one stating right and another left Looking for some information and peace of mind Just spent an hour and a half more looking at motherboards and after blowing up as large as possible I noticed a casted into the upper and lower right hand plastic form that would probably hold the face of the battery off the contacts Still looking nbsp

A:CMOS battery placement

Hi CollinsMachine and welcome to TSG.

The battery holders are designed so the battery will only fit properly one way around so I think you're ok.
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How long should a CMOS battery last? Does this battery stay charged when the computer is in use?



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BIOS here has got a forgotten password...I read that taking out the CMOS
battery resets the password...if I do this will it screw up loads of other settings on me ?

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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?
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As i was looking online for people with the same problem, i did find that i need a Maxell ML-1220 3volt rechargeable battery, but do not know if they are available at bestbuy or something like that or if i have to order it online.

any help is appreciated greatly. thank you in advance....

A:CMOS Battery for hp laptop?

The CMOS battery may be located under the keyboard or accessed under a "door" on the bottom of the laptop. Taking the laptop to a repair center might be a wise thing to do
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Dell InspironB130 will not boot and power. I tested the power supply and power plug look good. I have been reading on different web site, some people have problem with cmos battery going bad. They replace the battery and it the booting problem. The laptop is nine years old, and I test cmos battery, it has three voltage. However, can see cmos battery still be bad..

Thank You!

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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
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Hi guys. I have recently been given a laptop (Acer Extensa 501t) and yesterday it informed me that the CMOS battery was bad. I did a little poking around on the net and found a service manual to tell me how to pull this thing apart.
So I pulled it apart to replace the battery. All went well until I broke part of the battery holder. But the part I broke could (sort of) be held in place by a little bit of metal (battery connector?).
Anyway, I proceeded with replacing the battery and put everything back together and it all worked well, I reset the time etc and used the internet via usb. But when I turned the laptop off and restarted, it again told me that the CMOS battery was bad.
Question is can I glue the broken part down to the motherboard and what glue can I use?

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

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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.

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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.
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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.
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Can anyone please help?

A:Solved: CMOS Battery

The cmos battery usually has a number on it.
CR2032 are pretty standard for computers.
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I have a friend with a HP G62 ... She forgot her password Do i have to find and remove the Cmos ??

A:Please help me to replace CMOS battery

What kind of password? Power on, administrator, windows password?
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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
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A:Please help me to replace CMOS battery

Hi, Can you post back with the full Model No. and Product No. of your G62 series notebook - see Here for a guide on locating this information. Regards, DP-K
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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
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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