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Computer Wont Bootup! No Screen, No Power

By jshtcm213 ·
I have a computer that wont boot up at all. I have checked the power supply on a different pc, so Ive ruled that out. Ram works as well as optical drives and hard drive. My CPU: AMD Duron 950, with a heatsink and new fan. MY Motherboard: Abit 810D v5.2C Theres no dust and all connections are correct. I know the problems not software. When I try to boot my pc, I get nothing. No power led, it wont turn on. Though, only once when I tried to turn it on, the cpu fan started moving for a second then stopped. I dont know what it could be. Motherboard is fried? or CPU is dead? Any help or suggestions is appreciated. Thanks

I tested my hard drive and video cards on another computer, and they work fine. I get no screen or power when booting the pc.

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by arrichter In reply to Computer Wont Bootup! No ...

Sounds like your motherboard is fried. I had the same thing happen to an old pc of mine. If the problem was just the processor, the mbd would give you a post beep indicating that there was a problem with the processor. The processor may also be bad though. Usually if something shorts in the mbd, the processor goes kaput also. Wish I had better news. Hope this helps.

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by ghimpe-- In reply to Computer Wont Bootup! No ...

Although arrichter is probably right, you could try a few things before you crap the pc:

Reseat proccessor and HS/Fan (reapply thermal paste)

Take the mobo out of it's case and try to start it (some metal thingie could have fallen inside the PC and it's shorted/shorting the mobo)

Disconect the Power Button cable from mobo and temporarly short those 2 pins with a metal screw driver.

Try to boot with only minimum components, it's posible your PSU isn't capable anymore of powering all your devices.

Hope this helps a little more

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by willcomp In reply to Computer Wont Bootup! No ...

Check capacitors on mobo for bulging and/or leakage. Tops should be flat.

Your motherboard was likely manufactured during the "bad cap" period.

If caps are deformed or leaking, only realistic option is to replace mobo. The caps can be replaced, but unless you do it yourself it's cheaper to replace mobo.

Dalton

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by jshtcm213 In reply to Computer Wont Bootup! No ...

Thank you for your helpful advice. I took the motherboard out the case and put everything back together with only minimal components. Only hard drive, 256mb stick of ddr ram , pci video card. I removed the fan and heatsink. But I didnt remove the cpu because I didnt know how. You said something about thermal paste. Well I put back the heatsink without any thermal paste, Is that okay?

Anyways, now the first time turn it on the cpu fan will whirl for a second, but thats it. Nothing turns on. It sounds like my motherboard fried... Ive never had a hardware problem with this computer til now.

By the way, how can i troublshoot a bad cpu and how to remove and install the right way.

Much thanks

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by ghimpe-- In reply to Computer Wont Bootup! No ...

" Well I put back the heatsink without any thermal paste, Is that okay?"

NO, that's verry bad.

Here is a verry usefull link : http://www.fonerbooks.com/r_cpu.htm

As mentioned above, check for bulged electrolitic capacitators.

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by jkaras In reply to Computer Wont Bootup! No ...

You'll laugh but you probably got the board torqued a little by over tightening the mobo screws grounding the board out. I had the same problem with my first pc build. I bought a completely new power supply and nothing. I removed the jumpers, nothing. I went to a local shop and had them test the board and they thought it was DOA. When I got home I got so mad that I started to yank the ATX connector off the board slightly harshly. At the same time I hit the power button screaming obscenities and I saw the led light go green and whammo it powered up. Stupified I loosened the screws slightly and all is better now. So far three other people called me when they built theirs when the same thing was happening to them and each time that was the trick. If it isnt that then the board could be DOA. If you have an another processor lying around you might want to try.

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