can someone please tell me why grand theft auto and certain other titles install, and start up ok, then flash and flicker on the gamescreen itself? they usually crash after a couple of minutes. is this a graphics card issue? i dont understand why they should install ok, but not play. i have managed to play collin mcrae 3, and simcity4 and hitman2. somebody please help! should i try runnin it through a vid cable into a tv?