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Led on motherboard comes on and goes off when power turned on

Q: Led on motherboard comes on and goes off when power turned on

The led on the motherboard will go on for a second and then go off when power cord is inserted to plugin or when power is turned on.

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Preferred Solution: Led on motherboard comes on and goes off when power turned on

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A: Led on motherboard comes on and goes off when power turned on

Thanks for that interesting piece of info.
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Hi, my desktop had been shutting off by itself (i was just surfing the web or using other applications like word) several times a day for the past two days. But each time i can get it back on by simply turning on and off the switch at the back (the one next to power cord)

Yesterday night it turned off suddenly again and i smelled something burned. And I can't get it back on from then. I still see a light on the motherboard. Any suggestions on what went wrong?

(also, every time when i turn on my computer, there are some small sizzling sound, i don't know if i has anything to do with it..)

Please help!

A:PC Can't be turned on, motherboard light on

It could be that the power supply is on its way out or has died ... i had the same thing happen to me , i took the side case off and checked all the leads , i then took the power lead off the motherbard and found out that 3 prongs were burnt out and a few others were black , if this is the case its a new power supply and possably a new motherbard as well if the power connector looks burnt .

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The problem is that I am being told I am outside the 3-month repair warranty. I think this stinks! It's a known issue and I would like someone at Dell to step up make my expensive computer work normally all of he time.
Yes, I have run every diagnostic known to man and the internet.
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A:EMachine Has No Power When Turned On

The gods do not favour this one
When the power supply went it may have taken out the motherboard as well
It may be time to give up on this machine.
With a bit of luck you should be able to hook up the drive as a slave in another machine and recover the data from it
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A:Power Supply Is On But CPU fan turned off


Has any cables been unseated?
Perhaps the PSU is at fault..if that is ok, then the Motherboard needs diagnosing.
If the lights come on, the PSU may still be at fault.. i.e not giving sufficient power for whatever reason.
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A:fix it power button turned bad

you can turn your motherboard on manually by getting any slim metal and then touching both power pins with the slim metal, you touch one pin from the bottom and from the top something, but if you don't want to struggle you might need to solder
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A:Would a PCB or motherboard be damaged if dipped into pure alcohol/distilled water while turned on?

OUCH ! Your assumptions may be spot on, but OMG why would one try this?????????

There's something called 'leakage' - - current flow when it's not expected.

I was working in an aerospace lab and the the EE had me perform an experiment because I said "the resistivity of the salt water was too low and leakage would trigger the device". So we got a bucket of salt water and dropped the device into the bucket - - precisely 30 seconds later (the designed timeout), the bucket erupted and salt water spewed everywhere [yes, the device was an explosive link].

The trigger point for the explosive was <500ma
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Okay so last night my power went out for like half a second, and I was on my computer and it turned off also.

So how do I check if everything is okay?


A:My computer turned off when power flash...

Originally Posted by adeang

Okay so last night my power went out for like half a second, and I was on my computer and it turned off also.

So how do I check if everything is okay?


turn it on? I can't see how else you'd check
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A:Sharing with computer turned off/low power?

No, you'd have to wake the computer on a LAN event to bring it out of the low power state. Or you could purchase a Network Attached Storage appliance on your network.
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Mine works even when my computer is off. Is this a feature in the psu or software related?

The mobo is MSI-7623.

A:What makes my USB power turned on when computer is off?

Some Motherboards have Battery Charging support which can be enabled in the BIOS .. Also need to check in the Power Management for the USB devices to uncheck the Allow the computer to turn off...
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UPDATE - plugged my psu into it and it turned on so im assuming ive been very unlucky and psu has just blown can anyone help me where to get one very cheap pc is a hp media centre m000 I looked on ebay and cant seem to see anything the one in there is the origanal I think which is a 230watt

A:HP tower just turned off, no power light

Maybe -
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A:No Power, Blinking green light on power supply and motherboard

Sounds like a Power Supply problem.
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The motherboard has a power connector for the graphic card next to the slot.

Is there any reason I should connect the power for the card to the power connector on the board instead of directly to the power supply?

A:Graphic card power to power supply or connector on motherboard?

First time I have ever seen that feature. I like it. I'm thinking that is a neat/easy way to partially eliminate cable clutter from the PSU. Give it a shot, you can always revert to PSU cable if you wish.
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A:Does power supply with higher power rating really burn motherboard?

The long answer is "No".
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A:Power doesn't automatically turned off after shutdown

1: Click - Start - Control Panel - Performance and Maintenance - Power Options

2: Then click APM - Enable Advanced Power Management Support
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A:Flashback LED is flashing when power Supply turned on

No idea but slight suggestion Power supply???
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A:Need network card that cannot be 'turned off to save power'.

I've never run into a computer or other network device that actually shut off while the computer was fully powered on. Something else is amiss, Alex. The adapter is not the problem.
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A:Computer turned off in the middle of SimCity. Bad power supply?

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A:Unable to connect to internet after laptop power is turned off

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Any ideas would be greatly appreciated.
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A:Wireless turned off after lid closed or sleep (Not Power Management)

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A:Accidently turned off power while installing windows updates.

Hi MrAtiF and welcome to Vista Forums

The reason why you are having problems is because some updates overwrite and patch system files. When this happens, you need to take particular heed about the warning not to turn off your machine whilst the updates are configured/installed. Should power be removed, then some of these files will be incomplete and in an uncertain state.

Have a look at this Tutorial: Advanced Boot Options

Try Last Known Good Configuration (advanced). If that doesn't work, try these options in order:
System Restore - How to
Startup Repair
Repair Install For Vista

If none of these work, or you can't even access them, then you might need to do a clean installation:
Clean Install From Upgrade Vista
Clean Install with a Full Version of Vista
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A:Computer won't power up, motherboard seems to be getting power

Seems like a fried motherboard. I guess you'll have to replace it.
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A:K7 motherboard will not power up after power outage

Steve1 said:

Any help would be appreciated.

Steve1Click to expand...

Hi I have a PC that does the same thing, I think its the PSU, if I remove the mains cable for about 2 minutes, then replace it, the thing powers on OK, I really must get round to sorting it out soon...
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HP Palvilion m c Motherboard IPIBL-LA Berkeley http h www hp com ewfrf wc lc en amp lang en amp lc en amp product amp task N Power Supply DPS- ab- a http www itwinkle com hp posu html Hello all this is my power Is NO motherboard? it or supply POWER, first post First let me thank all NO POWER, Is it power supply or motherboard? for being here and sharing your vast knowledge My PC and power supply is above web-links included for more accurate description Also I have scoured this forum internet attempting to resolved and yes there is a ton of info The problem is the I cannot find specific details quot similar quot to my problem regarding how they determined the repair action other than replaced power or mobo So hopefully when this is resolved this will help someone with my similar problem - Problem gt PC will not turn-on just as if not plugged into power source -- Sypnopsis gt Nothing unusual happened as far as I know Shut-down PC for the evening as usual next day went to turn it on nothing - Troubleshooting accomplished -- Checked power outlet amp cords checked good -- Green light on back of power supply is steady green normal indication -- Removed power supply to test with multi-meter Strapped jumpered pins green wire with ground blk wire All appears normal everything is in range of specifications values below pin pin pin pin pin pin pin pin pin pin pin - pin pin pin -- Tested my power button wires for continuity on PC case properly shorts -- Reassemble everything still nothing -- Disassemble entire PC motherboard is sitting on cardboard box --- Items plugged into motherboard -pin atx plug and from NO POWER, Is it power supply or motherboard? power supply -pin plug volt from power supply gig ram stick CPU amp CPU fan - Goal gt power-on motherboard -- Tried shorting power button pins nothing -- Tried shorting reset pins nothing -- Jump-started NO POWER, Is it power supply or motherboard? atx plug with paper clip POWERS ON See link below for example http www youtube com watch v FCspIGgBV amp feature related Unfortunately unlike the youtube video when I remove the paper clip I lose power and back to square one - Back to the PS tested PS with strap jumper on when I remove the strap the ATX loses power through its plugs though the green light stays constant green There is no external on off switch on the power supply -- Should the power supply lose power once the strap is removed -- If so how does the power supply know to stay on -- Any help is much appreciated trying to determine if power supply is bad MOBO etc and if I can repair it Also I cannot swap items I do not have any additional parts laying around ADDITONAL NOTES - When powered on the mobo pwr-btn pins and the reset pins have voltage accross them volts dc pwr btn pins though has quot NO quot effect when shorted volts dc reset pins resets when shorted it works the way it should - Attached additional items to see if I could fully boot PC System Fan note will not boot without this fan plugged-in quot ERROR System Fan Has Failed Service PC to prevent damage to the System Press F to continue quot video card geforce gt hp pn- key board plugged into PS keyboard port mouse plugged into PS mouse port Hard drive When strapped I can boot competely up and log-on to desktop When I choose quot restart quot via windows soft button it resets properly When I choose quot shutdown quot it will shutdown but then I have to remove the strap and reset the cmos I get no display unless I reset the CMOS to boot up properly again I m guessing ultimately its the power supply Since the problem directs back to losing power The PC boots properly when I make the conditions right so that would most likely eliminate a motherboard or cpu problem What I don t understand nor can I find any info on is how does the power supply stay activate I m aware of the shorting of the power button pins on the mobo Probably thinking too much into it but the power supply seems to be working accept for the mystery quot no po... Read more

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A:Vista Dual Boot Turned Missing BootMGR Turned Complete Horror

Hello Aaon, and welcome to Vista Forums.

You might see if running a Startup Repair on the drive Vista is on to see if it can repair the boot MBR file for it.

Hope this helps,
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A:No power to motherboard

Hello jessee.....yes, if the motherboard is dead, you can use your HDD. But, the OS will not will usable, as you will be installing a new motherboard with all new drivers. So, I will suggest that connect your hard disk to your friend's PC and transfer all the files that you need to a different partition and let the partition (mostly C drive) as it is with just your OS on it. When you will attach your HDD to your new board then you can just install new OS on the same partition i.e. C:
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A:Motherboard Power Help...

I should add...No beeps, no lights (except for that LAN light), and no fans try to start.

Thanks for your help in advance.
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A:Motherboard Power Help

If you have to short the power switch, you need a new case and a new motherboard. The power switch grounds a pin on the motherboard. This tells the motherboard to start up
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i have a few spare psu lying about
the 24 pin wide connector is fine
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can this be used...can i plug a normal molex connector into there?
if not...what is it used for?

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It won't start up, I tested the power supply and it was good. But just to be sure I put new one in. Replaced motherboard with a new one. Still no power to motherboard.
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A:No power to motherboard

Re Chech all you connections>switch power connections to the non working drives>try a different power supply if possible.are the drives new?
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A:Not a bad motherboard or PSU. Still won't power up

Speaking of shorts, try pulling the motherboard out of the case. Place it on a non-static, non-conducting surface and leaving in the CPU, heatsink/fan, only hook up the PSU, RAM and graphics card, see if will post.
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i was passed a packard bell x2414 the other day as it failed to power up. The fans would spin but nothing else.

ive tested the power supply using an antec power tester and get no errors so that counts out the PSU.

i then came to the conclusion that it was either the motherboard or cpu. I removed the ram and received a 1 long bleep which suggested that the motherboard was good and that maybe it was the CPU.

ive now replaced the motherboard just to double check the theory and again nothing. the fans power up for a second then nothing.

after this i would come to the conclusion that the cpu has failed.

the question is that i have never experienced this before... motherboards, psu and memory failures yes. but not a cpu failure especially intel (processor is a quad core q6600).

can anyone comment? offer advice?

many thanks in advance


A:new motherboard - no power up.

The only way I know, is to test the CPU on another motherboard and or test a known working CPU on that motherboard, eliminate one or the other.
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I got a better PC as a spare which wont be to bad but I need all that data.

Any ideas, for getting the data of and getting my pc fixed

A:Motherboard Power

to get the DATA, plug the hard drive into another computer as a slave drive. then u should be able to just drag and drop the data from one drive to the other.
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Mother Board won't power on. I tested the PS and it has good power. I replaced the CPU still nothing, replaced the memory still nothing. I put a PCI tester on no power to MB. Now I replaced the MB acting the same as the last MB. I changed everything but PS but it sending out the correct reading to the tester. any ideas why or what else to check? I tested the board outside the case in case it was shorting out. I don't think two MB and CPU could be bad.

A:motherboard won't power on

do you get any indication of power from the motherboard? for example, my motherboard has a light on it so even if it's off i can see that it's getting power.

take out the ram instead of replacing it. all we want to do is see that the motherboard is working, no other components.

do you have another power supply you could test it with?
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A:Acer KAV60: LCD is white when turned off, no image when turned on

It could be a defective inverter or LCD panel. I would try a new inverter first
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I have another PC with components that DO work (but the motherboard and processor are different and older), so I have replacements, but I don't know what's broken that would need replacing!

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I have a system based on a Epox 8KHA+ with the latest BIOS. 512MB RAM, AMD XP2000+ not overclocked, running at 56 degC., Windows XP fully updated.

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Any ideas please?

Many thanks


A:Power supply or motherboard?

Hello and welcome to Techspot.

Sounds like some kind of overheating problem. The psu is a major suspect.

Try another psu and see how it goes. I don`t think it`s your mobo.

Regards Howard :wave: :wave:
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I have a M2N-E SLI Edition. How do I measure how much power the motherboard itself uses. As well as:

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CPU (AMD Anthlon 64 X2 Dual Core Processor 6400+ 3.22GHz)

A:Motherboard Power Consumption

Motherboards by themselves consume little power, it is the components you have that will consume the majority of the power. Your CPU alone consumes about 125W typically, which may go upto 150W or so during extremely heavy utilization. Throw in about 50W more for your RAM and HDDs, and you have a maximum figure of about 200W or so.
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A:PC won't power up with ATX 4-pin connected to motherboard

is the cpu stock or has it been OC'd?
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It sounds like the power unit to me but could it be the motherboard?

my PC is an Advent 3215 (from PC World)

Thanks in advance


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A:Power Supply or Motherboard?

Hello there and welcome to Techspot!

I feel your pain. We've all been there. Not that sympathy makes things any better, but you have mine.

It is hard for us to tell what is wrong with your system without looking at it of course. But maybe we can help you confirm a few things.

You say you can see the green LED light is lit up on your motherboard. That's a good thing. When you push the power button, no fans are spinning at all? Not a good thing.

It could be any number of things, and the tests that need to be done involve removing parts to help troubleshoot. Do you feel comfortable doing these types of things?

Try unplugging and reconnect your power supply connections to the motherboard.

I would also test your computer case's power-on button. This is done by disconnecting the small 2pin cable from your case that goes to your motherboard, then using a screwdriver to quickly touch the two pins that that cable was connecting to. This will short the pins, and hopefully start your computer. If it does, then your power switch on your case needs replacing.

Other than that, I would try this test to see if you can get the power supply fans spinning:

If the fans on the PSU don't spin, then you have (another) dead power supply.

If the fans on the PSU do spin, then we have narrowed you down to either a dead motherboard or a dead CPU (probably motherboard)
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A:Power supply or Motherboard?

Check to see if the CPU was installed correctly and have not come "loose". Also check the pin that powers the CPU fan and see if it is seated securely.
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Hey how's it going. Any help would be great.
Had an older system so got a new motherboard and CPU. Installed it all and then no power when I try to switch it on. The orange modem light comes on but nothing else turns on.

New system-
Motherboard- z87-d3hp
CPU- i7-4770
Gpu- GeForce GTX 460
Ram- Kingston DDR 3
Psu- Shaw p4s6 860w.

Thank you

I also tried putting in one ram card at a time. Taking the graphic card out and using on board. Taking the motherboard out of the case to see if it was shorting out.

A:No power after motherboard install

Ratchetz said:

Hey how's it going. Any help would be great.
Had an older system so got a new motherboard and CPU. Installed it all and then no power when I try to switch it on. The orange modem light comes on but nothing else turns on.

New system-
Motherboard- z87-d3hp
CPU- i7-4770
Gpu- GeForce GTX 460
Ram- Kingston DDR 3
Psu- Shaw p4s6 860w.

Thank you

I also tried putting in one ram card at a time. Taking the graphic card out and using on board. Taking the motherboard out of the case to see if it was shorting out.Click to expand...

By any chance could you post a picture of your computer as it is hooked up right now so we can see if your missing anything. Try to check if the 4pin/8pin connector on the motherboard is hooked up and check for tightness of all the Motherboard connectors to start with.
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Hey guys before i start asking my question Since I m not a native English speaker i might sound a little bit weird So I would like to apologize for this in advance So I was regularly playing a game with my good old YO laptop Then i tried to lift it up to look what s under it and when I tilted it a little bit the fan that cools the entire system started making a really high annoying noise I immediately turned off my computer and unscrewed the layer covering the important pieces Then i unscrewed the fan and saw that the fan was scraping off the metal frame covering itself I bent the metal a little bit with my screwdriver to set the fan loose and it worked When I started my computer again the noise was gone But then I realised that there was no noise at all I started the computer with the cover open and i saw that the fan was not moving I took my laptop and fan to a tech store and they told me that they ve tested the fan and it s working smoothly And warned me that the problem might be about some integrate entegre in Turkish don t know the exact term for this one that helps motherboard or the CPU order fan to work and or stop And added that he is not sure but this is could be a complicated and serious problem so I should not trust any tech services but the MSI s own And I bet you can guess that they are too far from where I live or where I can travel And now I m home searching the entire internet database for a clue yet not finding anything at all P S I power - Motherboard Laptop fan. the can't ve discovered that the fan Laptop - Motherboard can't power the fan. is trying to move but something stops it immediately even in manual turbo fan mode So it makes a bizzare twitching move See the video below P S I ve tried to heaten up the computer with games and other heavy processes to trigger the fan I gave up and put my computer in the fridge at degrees celcius Some information that you might need You can always ask me for more info I m desperately in need of any kind of help Laptop Model MSI GE NC bought at the end of OS Windows Motherboard Manufacturer MSI Motherboard MS- BIOS version E IMS I m going to add a few videos and pics to help you guys understand the situtation better The socket for the fan and the pinned tip of the fan s cable detached The BIOS information screen At the second video you can hear the weird flashing sound that the fan makes nbsp
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I was replacing a fan in my case because it made a high pitched sound. I took it out to test it to make sure there wasnt too much pressure from the screws inside the case that were causing this noise. I unplugged one of the molex connectors from my gfx card to test it. It still made the sound so i plugged the molex back into the 2 molex to 6 pin connector and the computer shut off immediatly. Now when i hold down or just push the on button my led flashes and fans spin and stop repeatedly. Any Help would be just the best thing right now.

~Thank you


A:Motherboard or Power supply

NEVER unplug or plug in anything except maybe case fans inside a computer with it powered up! Pull out the video card and see if the computer powers on. If it powers on you have fried the video card. If the computer still doesn't power on, the power supply should be changed before you suspect the motherboard
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I was looking through motherboards and noticed that this one has an 8-PIN power connector.

I went and looked through PSUs and found that most are only 4-PIN, like this one.

What am I missing? How do you connect a 4-PIN PSU to an 8-PIN board?


A:8-PIN Motherboard and a 4-PIN Power Supply

A lot of the newer PSUs have two 4 pin connectors to use for the 8 pin connection. Also I have seen some 4pin to 8 pin adapters on NewEgg and eBay.
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Why is it that AMD socket motherboards specify CPU power limits and Intel socket motherboards do not. (yes I did google)

Edit: It's not a quiz question! It does suggest another reason for Intel to be a better option - better CPU power management.

I would have expected some hardware buff to know the answer

A:Motherboard and CPU power restrictions

If no response then Admin pls delete as a waste of storage space.
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Hi, I'm on a mission to patch together some kid's emachines T2682 P4 pc. I'm pretty sure the motherboard is toast, I managed to get it running once, began a defrag, then the screen went to "no signal" (I could hear it was still running) and on reboot, no beeps, no post, no signal. The fans run, so I think the power supply is ok. I removed the ram, still no beeps, no video signal. I'm set to order another board, but I read where in most cases the power supply is what causes the mboard failure. Should I get a power supply and try that first? Is there a way to just check the ps?

A:Power supply or Motherboard?????

I would replace the power supply at the same time as the mother board. I had a faulty supply that seemed to work, on an Emachine that was under warranty. It blew the motherboard and keyboard and a wirless adapter that was pluged into the usb port at the time. they replaced all the parts but the wireless adapter because that was my own part. They put in a used power supply and just after the warranty it went out again an took the motherboard with it again. I took out the harddrive and threw the rest in the garbage. No more emachines for me. It was cheap and used as a second computer for the grandkids so no loss.
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I have a computer thats acting really funny right Power issue? motherboard now Yesterday it was perfectly fine I left for a bi t and came back and my pc was off No one was home so I figured maybe it installed an update and restarted or something When I tried turning it back on nothing The fans didnt even spin So I checked the power supply and the voltage readings were right on par I tried removing componets and tried starting like Power motherboard issue? that Power motherboard issue? and nothing I decided to unplug the Power motherboard issue? power supply and try to plug it back in When I plugged it back in still nothing happened I then unplugged the pin connector from the board and tried just the pin connector and the fans started running As soon as I plugged the pin back in with the pin nothing happened again I tried different power supplies wt and all the same thing Im thinking the board might be messed up Any input or thoughts on what to try nbsp
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My computer was working great.  I went out of town for a week and upon my return, it would not turn on.  The green light on the power supply was lit but that was as far as it went.  I purchased a mobo but this did not fix the problem.  I am not real computer literate but have experience.  Does this mean that the power supply is gone since no power seems to go beyond the light?  If not, can you tell me what to try?

A:Motherboard or Power Supply?

You can test the power supply (PSU) with these instructions.
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for last days i have been trying hard to figure out what was going or Supplly Motherboard???!? Power on with my computer On Sunday after i tried to change the display settings my computer froze i turned it off then back on the computer didn t even boot to the BIOS i heard no voice or error messages I stripped the PC down left only CPU memory video cards no luck Then all of a sudden my power died thermal-take w i have no idea what quot murdered quot it all it was doing is blink only ones when i press the power button fans rotate once and the PC goes OFF however all these Power Supplly or Motherboard???!? times the green light of Power Supplly or Motherboard???!? the motherboard was on So i went to buy a new Power supply with watts Power Supplly or Motherboard???!? antec then again it was working fine but BIOS never loaded after few tries the same thing started to happen to the new power supply after i press the power button the PC blinks and goes off I went to buy another new antec power supply with watt antec it started working fine then i realized that my case speaker was off i turned it on and heard the beeps that video card is quot dead quot i went to buy a new AGP video card from best buy and plugged everything back on then the BIOS loaded fine then i tried to put my old video card it didn t work so i put the new video card and tried to power up but the PC was acting as i mentioned above it blinks and goes off i thought the new power supply died as well but then i unplugged the v pin power supply and the PC turned on fine it loaded to OS every time i put the pin v power supply plug the system will not power on it just blinks Now how in the heck the PC is working without that v pin plug i thought the Pentium s require that additional power specially when it is only watt power supply For last years my old watt power supply was connected by both plugs pin and pin can any one tell me what is going on Is mother board killing the power supplies or was it my old video card that did this crime shall i buy another power supply Right now the PC is working without that pin plug and i am kind of worried if anything happens in the long run Any suggestions or thought will be greatly appreciated Here are the specs of my PC P Ghz FSB Asus P T -C RD-RAM old video card ATI AIW new one Nvidia PSU - antec Watt nbsp

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I have the whole thing disassembled and I don't see any phisical damage other that a bit of really old dry milk right above where the hard drive was, when I plug it in the charge led only flashes on for a sec and then goes off no idea why, is there an issue with the change port? If so where can I get a new one?
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My pc won't properly boot up (i.e. all the fans turn, but there's no video input), so I have troubleshooted all parts. Eventually I put my PSU in another computer, to find that that one didn't boot at all. I concluded the PSU had to be broken.

As a last test I used a multimeter to manually test the voltages of the 24-pin connector and found that they were all next-to perfect.

Does that indicate that the PSU is healthy, and my motherboard must be dead?


A:Power supply or motherboard?

Marty9231 said:

Does that indicate that the PSU is healthy, and my motherboard must be dead?Click to expand...

No. It just means that under essentially no load the PSU is delivering the proper voltages. The voltages supplied under load may dip well below what they are supposed to be.
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Hi everyone, I recently swapped out motherboards and cases to fit the situation and one motherboard I just bought worked in one case and now in the new case the power surges like a flash then shuts off,it seems like something might be grounding out? I have tried everything-rewired and powered up-put the motherboard on plastic screws-tried a new case-nothing the motherboard just flashes with power very briefly then nothing, what is wrong?

A:motherboard power problem?

To check for grounding it is best to test the board outside of any case, putting it on the box it came in is good. Do that with just the CPU (+heatsink and fan) and a single stick of RAM installed to see if it POSTs.

It is possible that the motherboard is dead, or maybe the PSU you are using!
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Power issue or the motherboard issue

Not sure where to post this so I'll put it in here. I've been building new computers for a while but i still get the occasional problem that is new to me. Just built a new system and all seemed easy enough, but after plugging the power in, yet before i pushed the power button, the power LED came on and the system fans started working.I also noticed the monitor flashing too! I was too scared to push the power button in case i fry the whole thing. Can't find any mistakes please help!

A:Power issue with the motherboard P35-S3L

Your power supply may be defective. Try another one
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All other components were working with the old motherboard ( which was damaged and was not booting correctly ).

I've plugged in new motherboard/RAM/CPU and when I power on the system via either the power button on the case or the power button on the motherboard, I get nothing. No power at all. I've checked all the PSU connections to the MB and I am at a loss as to why it is not powering on.

What's interesting is that when I plug the case power button connector in on the motherboard while it is connected to power, the system powers on for about 5 seconds before shutting down again.

Memory: ASRock 890GX Extreme3
Ram: G.Skill Ripjaws F3-12800CL8D-4GBRM
PSU: Corsair HX-650 Power Supply
CPU: Phenom II X3 720 BE

Any help would be appreciated.

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I have a asus me-99B celeron 500Mhz motherboard, it will auto power up whenever time goes to 00:00:00. any comment is welcome. Thanks


A:motherboard auto power up

frist i would check any auto power on option in bios
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I have a P6vem3 mainboard and everything seems to work but the monitor will not come out of standby.
I get a post code of E9 and I have seen EE pc analyzer. I put in another vga card, but
the same thing happens when the computer starts. It gives a single continuous beep.
Should I replace the power supply, I'm not sure what to replace it with. Or should I just buy another motherboard?
Please help,
Thank you

A:motherboard vs power supply

It sounds like a issue with the memory. If you have the mainboard manual see what a long continuous beep means. more then likely its bad memory so try to buy new RAM if that dont work buy a new mainboard
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Hello everyone I seem to be having a rather simple yet immensely frustrating issue I m building a computer i plugged the power connector on the mobo turned it on and bam it worked Great right well today i came home from work and it would not work So i opened the case up and took out the power connector after inspecting both ends i put it back in fans started and the motherboard light came on but only for a second After fiddling with it some more i found that the only time my mobo gets any juice is when i put the connector from the power supply in just exactly the right place in the motherboard connector If i push it all the way in i can hear an odd whining noise from my PSU Like a gnat in your ear I m not sure how long the motherboard will stay on as my hands are not steady enough but i know power Motherboard connector the times have varied Any opinions I have a corsair cx and a biostar ta GB if that helps Thanks nbsp

A:Motherboard power connector

Just checking but did you also plug in the P4 12V ATX connector on the motherboard?
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OK I ll try to get it right I have an Intel Ghz Duo Core on an ASUS Motherboard Gig RAM and all about six years old running Windows Pro When I do a cold Power what? OS? or Motherboard? .... supply? bootup from the power OFF condition the PC freezes at the BIOS message and will sit there forever If instead I press DELETE on bootup it will boot right through to the BIOS settings page blue white screen whereupon I do the ESC and EXIT bit get Power supply? Motherboard? OS? .... or what? presented with quot Start Windows Normally quot and all is then OK If I do a reboot using the reset push button it will only proceed to the BIOS part where the HARD DISC is checked and again will sit there for ever Now to confuse it further if I turn the PC OFF and ON using the front deck push button it will do a normal reboot right through to starting Windows correctly Whilst the PC runs reasonably well thereafter it is quite common Power supply? Motherboard? OS? .... or what? for it to do a complete and total shutdown for no reason whatsoever or the keyboard or mouse to suddenly stop working On the back of the deck is yet another ON OFF switch and using this to reboot the PC results in a normal bootup So something stinks using the RESET Pb on the front of the deck or a normal cold bootup I replaced the Motherboard battery pushed and pulled all the wires - as you do - all to no avail It is far from a happy PC and I suspect either the power pack is playing up or the Motherboard is on the way out It is quite common to be tapping away quite happily when BANG the whole thing does a complete shutdown following a keystroke or adding a USB device such as a camera or such For no apparent reason on a bootup it will decide to reinstall a whole stack of drivers that have been working satisfactorily to date It may be the Windows software as after I took it to the local repair shop now defunct I keep getting messages that Windows is not the genuine version When I asked the Techie on this one he said thay had used one of quot their Windows discs quot to effect some repairs - yeh I have everything backed up so am very gtempted to format the whole wretched thing and try again I know the above explanation is a but hard to follow but hoping someone can see a glaring problem Is there any disgnostic software I can download to do a check on the hardware or is this a waste of time Thanks nbsp

A:Power supply? Motherboard? OS? .... or what?

Sure. Start by going into the bios and checking your temps and voltages; specifically the cpu temp, system temp, 12V, 5V, and 3.3V values. Post those here.

Next download and run memtest This runs from bootable media ie CD, floppy, etc. You need to make the bootable disk and restart with the disk in the drive [CD set as first boot device in the bios]

Test the hard drive with the drive maker's diagnostic. You download this from whomever made the drive ie WD, Seagate, etc. Most of the time you have a choice between a windows version and a dos or boot version; get the boot version. Again it runs from bootable media.

One other thought; have you cleaned the system at all? If not, open the case and give it a good cleaning with a can of air [available at any office store, computer store, even walmart]
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hello the fan on my motherboard turns on however all the components do not such as my vga, usb, network port, keyboard or mouse etc

please help

windows vista home prem, 3 gb ram, 250hdd

A:Motherboard power problems

The computers power supply could be bad...
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Dear all I have tried reformatting with different OS - Vista x and to reboot? causes Motherboard Power windows x but when playing certain games I get BSOD or just a reboot without the BSOD prompt reboot has been disabled in the system failure option The Motherboard I use is Abit AW D-Max which has the pin connection pin Molex and the pin connection for power inlet Now the pin Molex cable is shared with few Power to Motherboard causes reboot? of my other devices such as sound card and fans since I only got cables Molex connectors in total supplied with the PSU So I am trying to get hold of more Molex cables from Enermax so I can just supply the power direct to the motherboard without sharing it to see if this stops the reboots but no luck no-one has them and they are out of stock I have tried registry programs Trojan removers reformatting updating drivers re-installing games memtest prime etc The results with memtest shown no errors when run for hours Now I have installed Vista eternity x since the sound card console launcher was not functioning with windows and I cannot get to select what mode I want to run the sound card - game entertainment movie - after a few days of install so I do not know if it is do with some windows update that disables this functioning of the sound card CPU Intel Q Ghz Core Quad Processor Q M Cache GHz MHz FSB MOBO Abit AW D-Max SOUND CARD Creative labs Elite Pro X-Fi GPU EVGA GeForce GTX CO-OP Hydro Copper Video Card - MB DDR PCI-Express PSU Enermax Revolution ERV EGT w PSU RAM OCZ Reaper HPC Edition Dual Channel GB x GB Memory - DIMM -pin - MHz PC - TOWER Thermaltake Kandalf LCS VD BWS Full tower Water cooled HDD Western Digital Caviar SE GB AAKS SATA II MB Cache OS Windows x Final OEM and Vista Eternity x and other components such as Aero Cool FP- -in- Card Reader And LCD Bay Controller and UV strobes and Large Fans and other items I cannot remember The only thing I can suggest is that the sharing of the power cable pin Molex maybe causing the reboot when computer under stress For a few days since I have reformatted with Vista x when I am watching movies using power DVD etc and doing other background activities such as downloading or installing the computer reboots The same happens with windows x I did have a problem when I was installing windows updates and installing other software where the computer rebooted a few times could this have caused the windows updates to be corrupt Hope someone has an idea what I should do Thanks in advance Regards Jazz nbsp

A:Power to Motherboard causes reboot?

I was trying a reformat with Vista Eternity x64 again last night -->
Installed the driver for the GPU and was installing windows update and browsing the website - when the computer rebooted without the BSOD even though I disable auto reboot at system failure. No other drivers were installed such as for my sound card etc.

So does this rule out that the sound card could be the cause of the reboots and that likely the power supplied to the Motherboard could be the issue?

Anyhow I have given up and re-installed windows 7 x64 7600...

The following actions carried out ? Installed the drivers for GPU and sound card, anti virus (Kaspersky), regcure, Tune-up utilities, Xoftspy, Ccleaner, Microsoft office 2010, Winrar and Windows updates.

All seems to be running good and I can take control over the sound card to change the configuration of it --> game mode, entertainment mode etc and can control it using the hub - 3d effects volume control etc etc.

Created a restore point and went bed ^^

Tonight I will install the rest of the software - such as Batman Arkham Asylum and see if the computer reboots and make logs on what software I install / what actions I took before I lose the ability to take control of the sound card configuration and random reboot.

The one issue I am betting on is the power supplied to the motherboard, BUT I cannot rule this out as I need to get extra PSU 4 Pin Molex cables and they hard to get.

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Case Heres the thing I went to a friends house wolvman on here and was getting it set up He told me that because I Power out Either Or Supply went Motherboard needed a hard drive still and that neither of the raptors he gave me worked he had a gig IDE drive I plug it up having to unplug the side fan because all of the power supplies I have are limited to I think legacy connections I start the computer up nothings wrong but its lagging a little due to the system XP home getting drivers etc for the hard drive It comes up and says its working so I check it and it was It had a previous installation of XP on it so I see everything We then decided to play CS S and about minutes into it it was running fine and dandy it just shuts off First I think that the GPU went out because I didn t notice the computer went off just that the monitor said quot No signal quot but it went completely off I proceed to try to turn it back on and it does NOTHING I pulled the side of the case and checked how hot it was Either Power Supply Or Motherboard went out The Power Supply Either Power Supply Or Motherboard went out was pretty freaking hot along with the GPU CPU and HDD s This is where I get scared First I think it just overheated and shut down but then I realise that that s usually a BSOD correct Would the HDD s usually get that hot Its a Either Power Supply Or Motherboard went out simple Maxtor gig I believe its RPM No point in making threads X D Case I got a motherboard from him after this us deciding that I needed to upgrade anyway While its not great its still decent It contains an Athon XP Same as his computer and has PCI-E support I have no clue what the maker is or anything It has a Geforce IGP but the guy used to have a GPU in it but his brother stupidly knocked it off of the bed and one of the battery things on the GPU what are these busted and acid went all over it Do you think it will still work It is already in my case with a power supply but I am waiting for him to find the manual so I can plug up the power switch and everything will it hurt anything to just try different pins I stupidly did the uppermost top right one on the set of pins that you plug them up to and it wouldn t shut off without switching it off on the back of the PSU Simply do you think Battery acid could ve killed the Motherboard I apologize for this very long topic but I haven t been on for a while and in the meantime this all happened nbsp

A:Either Power Supply Or Motherboard went out

Maxtors fail way too frequently. Next choice is the power supply. Watch from the back with a strong light when the <ON> button is pressed. Does the fan blade turn four revolutions or less. That is a bad power supply.
There is no relationship, really, between heat and a BSOD. It can just as easily shut down as give you a BSOD.
I'm betting it is power supply, memory module, or Maxtor failure.
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Hey fellas. My mother in law had a power outage quite some time ago. When it happened her pc would not turn back on. Is there any way to check to see if the motherboard is still good? I would like to get it working as a secondary computer. Also, how can I tell what kind of power supply is required for that motherboard? Because I have tried a couple power supplies, and one was from a OLD 166mhz pc, while ther other was from a 866mhz, but it seems like the ends or where it plugs into the motherboard are different in shape. Any suggestions? This is a HP 900mhz pc, it would be nice for web browsing and other task. Thanks for any help!

A:Motherboard/Power Supply ?

Post the make/model of the motherboard and we can probably find a manual for it.
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I am working on my aunts PC HP slimline supply? Is or it the power motherboard again This Is it the motherboard or power supply? time it will not turn on seems relatively easy problem I press a power button Is it the motherboard or power supply? and exactly Is it the motherboard or power supply? nothing happens not even PSU fan spins I do not have a tester for FLEX PSU they have that tiny pins and not regular size ones but I take it out and cross the green wire PSU on with black ground wire and the PSU turns on hmmm So I independently test out each voltage on all wires and they all come out with proper voltages I put the PSU back in and I test out the power button and its wires and they are fine I even crossed the pins on the motherboard to get it to turn on and nothing The thing I can not get my head around it that in every motherboard failure I was a witness to I was at least getting some PSU response fan spinning That is why at first I thought it was PSU for sure but I do not have spare FLEX ATX PSU as they are not common at all Would I be wrong to assume that motherboard went south The way I see it ifI get a new motherboard for a lot less than new FLEX PSU with standard power supply plug I can just put the PC into normal chassis I have spares and use one on my many spare ATX PSU s and eliminate both possible sources of error weather it is a motherboard or FLEX PSU Thoughts Thanks nbsp

A:Is it the motherboard or power supply?

Assuming the fuse in the power cord is fine, I would suspect the PSU to be at fault.