I have a fairly new p4 system(3 months) and it keeps reseting, it seems to be randomly happening. I have reformatted the system, changed the power supply (Twice) The original power supply was faulty it was leaking power however changing it has not fixed the problem, i also changed it again to make certain i didnt get another dud. Replaced the hard drive. This is a new machine so dust is not an issue. The machine has excellent ventilation and the CPU runs at a tempreture of around 40 degrees under load. Also another thing is sometimes it doesnt reset it just turns off.
This problem has been driving me insane, all help and ideas will be greatly appreciated.