I just bought a Sapphire ATI Radeon 6870 Graphics card.
My Computer is a:
Mainoard: ASRock X58 Extreme 3 Mainboard
Power Supply: CoolerMaster GX 750W
CPU: Intel i7 3,4 GHz
My computer keeps getting messed up. I don't know why... I'm gaming or watching a video and suddenly my Screen Turns into Stripes and nothing works... I need to Restart the PC.