I am experiencing exactly the same issue brother. Didn't even notice if it could be the drivers. But now that you've mentioned it...
I own a gtx 780 from asus. And same thing been happening to me. The screen goes black, sound stutters. it might restart on it's own, or i have to do it.
i also sometimes experience screen turning off (green led to orange led) and i can still hear the ingame sounds etc. And i'll have to do a manual restart from the reset button.