It appears it is possible for your Windows 7 user account pic to appear over top of your game, this seems to happen if you pin too many apps to your Start Menu, clearing your Start Menu pins clears up the problem. Just thought i'd give a heads up and solution to anyone who has this problem. This happened running Windows 7 64 bit and running the game in hardware mode by the way.

I can tell you that Lord Vader was not pleased with the appearance of flowers over top of his game. :P