I'll post my specs first before going into my issue.
MB= Asrock Z77 Extreme 4 (Flashed to latest bios)
CPU=I5-3570k (Right now running at stock settings)
Memory=16gb Corsair Vengeance 160
GPU=Sapphire Radeon 7970OC
Sound=ASUS Xonar DX
Monitor=Samsung D550 51inch 3D plasma television connected through HDMI
Basically I am only having this issue in DX10 or 11 games when those features are enabled. Any DX9 game or the same games when switched to DX9 settings work fine as well. Basically the game (ex Far Cry 3) starts fine and will play for up to a few minutes then the screen loses video (While still getting audio) and states signal lost or resolution not supported. This usually requires me to hard reset and sometimes if I'm lucky I can ALT/TAB back to the desktop. Once again if I am able to run under DX9 I have no issues at all.
Some trouble shooting that I have done on my own.
Removed any and all OC settings processor and gpu.
Flashed MB bios to latest version.
Ran a driver sweeper then reinstalled latest catalyst software. Was running 12.11 beta with cap but reverted back to 12.10whql no change.
Killed all background running programs
Finally fresh install of windows reloading 12.10whql driver still same issue.
I guess at this point I'm wondering if it's a bad card? I'm skeptical that it is because DX9 works fine. Could it be a card bios issue? So far I have found no option on Sapphires site to download a newer version. I would think my power supply would not be the issue because it's a 850 basically purchased in case I wanted a second card someday. So being underpowered should not be a problem as well.
I'm at a loss folks. I can suck it up and run DX9 of course but since I have a beast of a card and am only running single monitor I wouldn't think I'm pushing it to far in any way. Any help is greatly appreciated.