Black Screen whenever I play a game fullscreen.

IbexLinkin

Honorable
Jun 19, 2013
4
0
10,510
It happens whenever I turn any modern game (RIFT, CoD, Neverwinter, Diablo 3) to high settings or above to even slightly stress my GPU. This doesn't even happen only in fullscreen. I upgraded my PSU to 750w and have plenty of power. Any help would be much appreciated.


Specs:
i7 2600 (Not OC'ed)
GTX 660 2GB
750w Corsair PSU
1.5TB Hard Drive


It's a Gateway FX6860 - UR20P
that's been replaced with a 660 and a 750w PSU.

Thanks!