Ok i just got call of duty 4 and crysis. I have a crappy video card pny 8500gt 512mb. mobo is a evga 650i running a core2 duo 2.33. 4gigs or ram running xp pro SP1. games play fine on low settings. about ten minutes into the games i get the blue death screen, memory dump ect. says "windows had to be shut down to prevent damage to computer ect". also says some things about video drivers, as well as some things about bios memory settings. shadowing and mirroring or somthing. Anyone have any ideas?