It usually happens when gaming, but has also happened when I'm simply on the internet. I'll be playing a game and all of a sudden the screen goes black, but the audio of the game seems to continue for a sort time. Then, the screen says something about there being no visual input and the audio cuts out, forcing me to restart my computer manually. I've scanned and fixed my registry using CCleaner and scanned for any viruses or malware, multiple times. Neither seem to have done any good. Please help!