Its all games when they click full.screen. yeah I was thinking it may be some weird setting will try.that when I get home. Could it be physics enabled too ? And its def the multi monitor setting since I did not change that yet.
It wouldn't be a PhysX issue, since you are not playing a PhysX game. I have been assuming your power supply is sufficient because you were running a 5970, but if it's not driver related, that would be my next area to explore.