Bc2 Problems With 8800gtx

im using a asus 8800gtx on one of my computers. the problem is that while im playing bc2 the computer crashes and does not respond. The weird part is that its the only game that the computer crashes.(ive played sc2,cod6,crysis......)the temps are a little hot between 60 to 80 degrees celcius but i dont believe that its the problem simply because all games run on these temps and never crash.
my bro was saying that its software
full specs: asus p5k ,core 2 duo 6850, 4gb kingston ddr2 800,asus 8800gtx, antec 650W psu

what do you guys think?