When reinstalling your drivers, did you install it over your 'old' installation or did you remove the drivers and then install them again? If you did the former, definitely try the latter. I reinstalled over my existing drivers but I just finished your suggestion of wiping them clean and starting o...

http://i36.tinypic.com/2v8mo8y.png This bug happens in both windowed mode and fullscreen mode but it was easier to get a screenshot from a window. I'm running the Steam version and I've tried verifying the game cache as well as deleting the game and reinstalling. I've tried running the demo game an...