Try updating to the newest drivers. They work fine.
Thanks for getting back to me...I have tried that already I'm afraid....any other suggestions?
go into task manager and close any processes running that you don't need at the time. I had the same issue (not with a laptop) where 2 of my 7 cards were giving this problem. After increasing the virtual memory to 18gb and also closing anything that i didn't need this sorted it.