I recently bought a GeForce GTX 670 Gaming System 1 (PCCG GeForce GTX 670 Gaming System 1 [PCCG-I6701508] - $1299.00 : PC Case Gear
). It has been running normally and all, everything seems to work. I downloaded a few games (Saints row: The Third and F.E.A.R 3) I put the graphics to Ultra. In Saints Row I'm driving around and it suddenly freezes completely. In F.E.A.R 3 when I load into a game it freezes completely as well.
I am able to ctrl + alt + del and end task to get out of the game. It only seems to be doing this for demanding games with good graphics. I have no idea on how to fix it.