For some reason when I start the game the game intro quite often doesnt run unless I use alt-tab, and after I do that the game drops to desktop while it loads. Finally when I get to the main menu I'm able to start loading up a saved game or new game but once thats done the graphics are all messed up. Now I did make some minor changes to my video, but that was changing the screen brightness and brightening up my gamma settings, could that have caused all these problems?