I have a GTX 670 Windforce edition, i have a problem with it, recently it has started to turn off when i start games, for example.. Today i started Counter-Strike : Global Offensive and loaded up a game, everything went good untill it was time for the game to render 3D... My computer blackscreens and the only way to restart it is to press the reset button on my case. And the gpu fan goes complete apeshit when this happends..