Hello, just bought card and did a fresh install of Windows 7. While trying to play AA3 everything is fine for about a minute or so then game screen completley blurrs. All menu screen are clear and geat, as well as the weapon but work is blurry. If I don't exit quickley after blurring occures game locks up and only way to clear errroe is to restar system. Any Idead what could be causing problem?