PC Turns on then immediately off

June 22, 2011 at 23:19:08
Specs: Windows 7, Phenom II X6 3.3 / 8GB DDR3 1600
Ok so my PC will not power on after working fine for about a week. Its a brand new build and everything worked tiptop then I shut down my computer last night and this morning it seems to be dead. I don't know what could have possibly died, from what I read its probably the PSU but maybe the mobo. I dont know how i'd be able to tell the difference. All the fans start spinning but then stop

CPU Phenom X6 1100t Thuban 3.3
RAM Corsair Vengeance 8 GB DDR3 1600
GPU Asus 6850 DirectCU
HD 1 TB Seagate barracuda 3gps
Windows 7 Ultimate

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June 23, 2011 at 02:02:31
What you got here is probobly the motherboard related problem. Have seen it when it comes to mother boer that has been poorly assembled which has generated simular problems as yours. In some motherboards (not yours I'm afraid) a LED which errorcodes indicates type of problem which is an improvement in the right direction.

However have you tired to use another PSU (Power Supply)?
The motherboard in another configuration? (less RAM, other RAM)
The way I understand your computer is powering of before it actually reach post in the BIOS. This itself indicates some sort of power fail, where the motherboard switch of either to protect its components or the PSU delivers wrong voltage to some motherboard cirquit.

This could also according to my Googling be result of overclocking test.
You should however the be able to come back to some sort of default value.

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June 23, 2011 at 13:51:02
Sadly I dont have another functioning PSU to test, I have used the onboard overclocking tool but it worked since I had built the PC. Is there anyway to reset that to see if maybe that is the problem?

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