Promlems when starting game
 

Ok guys I need some help with this problem. When I start the game sometimes it says, you know the game crashed and you have to pick normal mode, restart windows, or safe mode and i click normal modde and it works fine. I mean this happens alot and the game hasnt crashed or anything it still runs fine and doesnt crash, but when i try to start game later it says that message again.. Please someone give me an answer....

mad: