Hello,
 
  I have a GTX 770 and it seems to keep losing sync when starting certain videos on VLC and when playing Netflix on Google Chrome. If netflix loses connectivity to the server and stops the video card will lose sync and I have to unplug and plug in the HDMI for it to receive signal again. Anyone else have this problem? I've also noticed that my TV won't play some games while my LCD TV will, could this be the issue? I have a 82" Mitsubishi WD-82840 1080P rear projection TV. Never seemed to have this problem before. Any help would be appreciated.

I just tested this on the 2 DVI outputs and it still does it. Also updated software

I don't think it's ever blinked before, but I am unsure. It definitely has never locked up with a black screen before. Although until recently I've never had a netflix error screen. Can't think of any damn reason why a connection error screen on chrome would cause any issue with the video card. As stated before I was playing a game with the same issue. The second the game loaded it would turn black and stay black. I hooked up on old LCD and I could see the game. Wondering if it may be on the TV side, but the same question remains, Why is it doing it only when I play certain videos and when Netflix crashes? Refresh rate issue or something?