Hi guys, Heres the deal. I brought a custom made PC around 5 months back. Its a gaming PC so as you guessed im a pretty competant gamer The porblem i have had for quiet a while now is within an hour of playing a first perosn shooting game or any intensive game, all of the screen will suddenly change colour (it turns multicoloured) and the sound starts repeating. After this has happened the PC wil not respond to any commands. I have tried to check the tempretures but i cant as the PC wont respond. When this happens I always have to restart the PC at the button (whihc i hate doing). This is really annoying for online mp games since i suddenly disconnect at the wrong times. I dont believe it is a fan issue because , well to be honest my computer keeps me cool i have so many fans. Hope you can help... System Specs: ASUS P5QL PRO Motherboard (intel P43 Express Chipset) Intel Core 2 Duo E7400 @ 2.80GHz nVidia Geforce 9800GT 4gb RAM have a soundblaster soundcard but i doubt that matters. Powersupply - NeoPower 650 Blue 650W Ive checked the voltages and tempretures whislt running a game. its all fine.