So i think this happened around 3 times in the last few months. I am gaming, and it will stop working. "Black ops 2 Stopped working" and instead of the game just crashing and i go to dekstop, there is a black screen, I can still see the taskbar and the icon for Black Ops on the taskbar but I cant get away from the black screen. If I hit ctrl alt del i cant go into task manager. the only thing I can do is sign out via the task manager, and sign back in. is this a sign of bad graphics card? it happened on this game, and elder scrolls online a couple times.