Crashes

[peyma]

I have got a E6600 processor, P5B motherboard, 2 gig RAM, and a 8800GTX with latest drivers


But first of all, cant run opengl in fullscreen, game will crash, and eventually my system, works in Direct3D, but getting crashes randomly, could take 5 mins, 30 mins, hour, whatever, just get a quick flash on blue screen, cant see what it says, and a insta reboot,

cause of it, and help would be nice....

thanks