Monitor connection problem
 

Hello, playing from my laptop, game runs great on my lappy, but id like to hook my laptop up to my 23 inch monitor, but when i do that the game freezes up, takes a few moments to unlock, when i try to return it to full screen mode it freezes up. also while in window mode if i click anywhere on the window bar surrounding the game, it freezes, crashes and displays a error. any one else had an issue connecting a alternate display? advice?