Well my friend is building a computer (I told him all the parts to get, so I feel responsible for it). Anyways he puts everything together and he says if he just lets it sit for a minute it turns itself off. It does this too when he's trying to install windows vista. But, if he goes into the bios is doesn't turn off, so I'm thinking it might be a certain setting on? Also, a major thing is it said for CPU temperature like 66-70 degrees Celsius. This sounds really high to me. I don't get why though, but he has 4 fans in his case and the cpu fan sits on top of the cpu. I was wondering that it might need thermal paste? I thought processors usually come with a small amount of thermal paste, which it didn't, but he tried it anyways. The troubleshooter in the manual said if this does it its most likely the processor overheating, but then it said it shouldn't be able to turn back on immediately, and the computer does.
Things he has tried: changing settings in bios (not sure if we did right ones though) tried different power supply, taking the power button off to see if it was sticking.
Well here are the parts:motherboardprocessor
If you need the rest I can list them, but it was having this problem with only the processor in and nothing else.
Also one more thing, but I live in New York and he lives in North Carolina, so I really can't help him except on the phone. Thanks for reading this really long post!
"I think there is a world market for maybe five computers." - Thomas Watson, Chairman of IBM, 1943