Black screen/image loss issue

I had this issue before I upgraded to the gtx 770, but not this bad. It usually happens when trying to run a benchmark program like 3DMark or Unigine Heaven. At random times the screen will go black. I can fix it by unplugging the HDMI for a couple of seconds and plugging it back in. This is a hassle though when I'm trying to run the benchmark and/or test an over clock. On 3DMark I already unchecked one of the system info boxes (can't remember which) which allowed me to get through it once, but then it went back to the same. The only other outside source I can think of that is causing the issue is MSE. Any ideas to resolve this?

bump. Any more suggestions? If it was just a bad cable I don't see why it would happen only when doing the benchmark programs.quikdash6

The monitor is doing some power-saving thing?