I have a Gigabyte 7970 OC edition. When playing Tera online the game randomly freezes/video locks, all sound is gone as well. 3-4 seconds later my PC monitor shuts off and acts like it's in sleep mode. Ctrl+alt+Delete does not work, I have to hard reboot. I use Radeon Pro to set in-game settings. I force SMAA @ Ultra and use Sweetfx to enhance the color quality (Radeon Pro built in version). I have tried several driver versions ranging from 13.2 beta 5 down to 12.8. The crashes seems to happen quicker using the 13.2 Beta 5 vs 13.1 or 12.11 Beta. PC Specs are below. See below for specs and temps under load.
CPU - 50-65C, GPU - Never goes above 50 under full load.
Core i7 930 @ 4.0 ghz, 8 GB DDR3 1333 @ 1450, Asus Sabertooth X58, Antec 1200, 7970 OC, Sound Blaster Audigy, Viewsonic 27" LED/LCD, Antec 100O PSU.
Any help would be greatly appreciated.