When ever I first start my computer after it has been off for say, several hours, it crashes within about 5 minutes. It doesnt matter what Im doing on it, letting it idle or whatever, it crashes. The cpu shuts off, the hard drives stops spinning but the power supply stays on. Sometimes it restarts but most of the times it doesnt. When it does restart or when I restart it, the computer is fine. I can run it for a couple days without problems. Any ideas whats wrong with it? Its a 1.6 p4 with a 400 watt psu.
