My old GTX 560 has failed, so I'm using just my i5-4670k solo until I get it replaced. Whenever I try to load a PC game, my entire system will freeze up and require a hard reboot. Is it actually impossible to do anything gaming related or is there something I need to do to get games working? I realize I'm restricted to the last decade or so with no card, but testing TF2 & Thief: Deadly Shadows both led to freezing. Either when I change the resolution to my native 1920*1080, or when I enter a server (TF2).