I went and bought a Windows Vista SP1 upgrade to upgrade my Windows Xp to Windows Vista and I did so. But when I tryed to run any game eg. Call of Duty Modern Warfare 2, Assassins Creed 2, Dragon Age Origins ect. it would come up with a description box say either - FATAL ERROR Cannot initialize renderer (Call of Juarez Bound in Blood) or DirectX encounted an unrecoverable error. Check the readme for possible solutions (Call of Duty Modern Warfare 2). Please Help! I can't run any game!