I just built a PC for my in-laws a couple weeks ago. It works just fine for most applications. But whenever my brothers try to play games on it, it will do one of 4 things: A) The screen goes black and the system restarts. B) The game closes and goes back to the desktop. C) Nothing, the system will do everything normal. D) The system will completely freeze up and they have to kill the power and restart. It seems to happen completely at random and with an assortment of games (Starcraft, Sid Meier's Pirates, Tiberian Sun). Here's what I used when putting it together: AMD Athlon 64 3200+ CPU Abit AX8 / K8T890 Mobo EVGA GeForce 6800XT PC-Express Video Card 1GB DDR400 RAM 350W Power Supply Windows XP w/SP2 The PC has never been used for internet purposes and has never been hooked up to the net. Is it possible that it needs some patches from Microsoft before it will work properly? I'd appreciate any help anyone can offer. Thanks!!