This is kinda tough to explain, but when I minimize Battlefield 1942, I cant get it to maximize again. I click it on the start menu, and my monitor goes thru the clicking that it goes thru and the floppy drive even makes a noise

but it wont come back up. Its very fickle...sometimes it does maximize but thats rare. I always have to restart the game since it wont go full screen. Any idea what it could be? Thanks in advance.