Apologies is this has been answered but i can't find it, install the games they work fine for a bit then i try to open them a while later and i get this message ... (using the last express as the game i'm trying to open)

This system does not support full screen mode - choose close to terminate the application.

Now nothing is checked as full screen , so i'm kind of stumped, hoping it's an easy solution with windows 7 and just can't see it. Any help would be appreciated, thanks.