I would often be playing and my screen would flicker and i would get a black screen where i can hear the game but cannot see anything. My GPU is showing 0% useage when this happens and my CPU at normal. No matter what i do i cannot get the game to come back, Any ideas on whats going on? I play in a window cuz the alt tabbing gives a error and game will shut down.

Im running:

Gtx 660
AMD Fx-8320 X8(Oc 4.5ghz)
16GB DDR3 Viper ram