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CPU or Motherboard dead?

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August 8, 2012 5:13:19 AM

Having some trouble with my system which has been running for about 2 weeks. I believe it is either the motherboard or the CPU that is dead, but any help from someone with more experience would be great.

As of 3 days ago the computer was running fine, until I came back after it had been on sleep for an hour or so. The computer wasn't turning on at all. I turned the power off at the wall and waited about 1 minute or so. I then switched it back on, and hit the power button on the computer chassis. For a split second the fans inside the chassis came on, as well as the LED's and the CPU fan. Then everything died and wouldn't turn on until I disconnected from the wall and did it all again.
At first I thought it was the PSU so I borrowed a friend's with strange results. If JUST the 24 pin power is plugged in I get CPU fan and the graphics card fan all running and the USB ports all have power to them. BUT if I plug the 6 pin CPU power in at the same time the PSU turns of straight away (Shorting?) This was all done out of the chassis on a non conductive surface with almost everything disconnected. I have tried removing RAM and graphics card and I don't have another CPU to test.

My thoughts are that the CPU is dead, even though it is only 2 weeks old :(  Could it be the motherboard or some other component?
Any help would be appreciated.
Thanks.

More about : cpu motherboard dead

a b B Homebuilt system
a b à CPUs
August 8, 2012 5:29:46 AM

OK well first off try reseting your CMOS
http://www.youtube.com/watch?v=Pdp_L5IxaNI

Then I think you should run MEMTEST
http://www.memtest.org/

Though if you can not even get a display then I am pretty sure that it is a mobo problem if you can get the mobo replaced... also check for bent pins on the cpu.

Hope this helped! :D 
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August 8, 2012 7:28:23 AM

Hey Panicmaser, thanks for the reply.
I have tried resetting the CMOS with no luck. I will end up sending the mother board or CPU back under warranty, I'm just not sure which one is failing.
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August 9, 2012 8:03:07 AM

Any idea if it's the motherboard or the CPU dead?
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a b B Homebuilt system
a b à CPUs
August 9, 2012 10:35:25 PM

honostly no idea... if you got it from a store just get both replaced

but if you cant get both replaced then get the mobo first because it does not sound like a cpu failure as much as mobo but if you can just to be safe get both
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