First of all thank's for having me on board. and secondly I'm new to computers. My systems specks are, Gateway/windows vista 32bit/AMD 5000+ windsor/ 2048Memory. GPU 8800gt.XFI extreme gamer sound. the Issue here is that after playing the game for about two hours- the computer shut's down, and all this started after Installing the- Gpu and sound card. Are there any adjustments to bios, and if so- how can I execute them. Your replies are appreciated.