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New Computer Build Suddenly Will Not Turn On


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#1 hapnoise

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Posted 27 August 2007 - 06:03 PM

Hello,

I assembled a computer this past Friday. The first time I turned the computer on it worked perfectly, and I installed Win XP Pro.

On Sunday I installed all my other programs. Everything went in no problem. I then powered down my system.

I turn it on about 12 hours later, and the computer will not turn on. Totally dead. I check all connections, outlet, and nothing. I assume it must be the PSU. I install a new one, and it still will not work. With the new PSU I hear a very slight buzzing from the CPU (I think). It's very quiet, and I can only hear this because the case is open.

I took the entire computer apart, and put it back together. Still nothing.(That buzz is there a little) Could the processor be burnt out. I have not even run any programs yet.

Specs:
450w PSU
3.0 ghz CPU
512 mb Video Card
2gb ram

I really appreciate any help that can be offered.

Thank you very much!!

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#2 Sterling14

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Posted 28 August 2007 - 04:57 AM

Welcome to Bleepingcomputer!

I think its your motherboard. My friend had a new build too that worked, and the next morning it was dead and wouldn't turn back on. He returned the motherboard and it's worked fine since.

To be sure look around the motherboard to see if any little capacitors look bent or are leaking electrolytes (gooey looking fluid) out of the bottom. Even if you don't find any I still believe your motherboard went bad.

If a new motherboard doesn't solve your problem then it would have to be your processor.
"I think there is a world market for maybe five computers." - Thomas Watson, Chairman of IBM, 1943

#3 hapnoise

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Posted 28 August 2007 - 12:19 PM

I'm putting a new motherboard in. I assume that is the problem. If it is the processor would it be burnt or anything?
If it is the motherboard, is there something that could have caused it, or does that sometimes just happen. Could a bad psu cause the motherboard to fry?
Thanks.




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