nvidia 7950 gt gc-duel screen

Help! any one have problems running duel screens using 7950gt gc? as mine does not....
Games run fine untill you hit 'windows' button to minimize games then screen goes funny pinkish colour with horizontal black lines...found out if you swap the lead to other port it comes back on ok.
So any one have any drivers that actually work?
Running intel duel core 6600- 2.4ghz on asus p5b delux board with latest mb drivers..
running latest win7 gc drivers
I also talked to a friend of mine who has a 7600 gc and his works ok for duel screen..?
Thx.
Cptn

Try using the "Alt-Esc" method to minimize games.

No good either it has the same affect as windows key...