So I just bought this card. I installed it and everything was fine. Play dirt 3 on max setting for the whole night. I turn off my PC and went to bed wake up in the morning turn my PC on and I got a problem. The screen freeze and flashing and display weird stuff. I have 600W PSU so IDK what is going here. IS this just a bad card or something wrong with me PC? Im switch back to my radeon 4600 and it works fine.