Hello all, I was playing the tutorial (learn as you play) using DX10/11 last night and after about 20 min the game screen suddenly became a white screen with vertical lines. Then the monitor started to flash between a black screen and the desktop and finally I saw a bsod message and the PC rebooted. I have a lot of PC games and I've never seen a bsod before on my PC. Has anyone experienced the above? BTW I'm running ATI 5870 (10.9 w/o hotfix).