So, I was playing through the dead money DLC, and after killing dean domino and shooting a few ghost people outside, as soon as I was lining up my sights on the head of a harvester, I lost control of my game. The white mouse that you normally see in webpages was in the middle of my screen, and I could move it around with my mouse but I couldn't turn my head. I also couldn't use my keyboard. I couldn't open my pipboy or pause the game. I just stood there like an idiot slowly spinning around in circles while the ghost people wailed on me. I tried restarting my game, but as soon as I get to the main menu, I lose control of the in-game mouse which then drifts off onto the side of the screen never to be seen again, and I'm stuck with a mouse I can't click on anything with. Help?