Application has been blocked from accessing Graphics Hardware

Hi, I do not run UE4 on DX10.
I have Win8.1 all drivers up to date, and my GTX660 ti has the latest Geforce drivers and experience. I am running UE4 on DX11, but it has nothing to do with UE… It is something on my system , I played FC3 last night and 5 minutes into the game it crashes with the same error. Guess it’s back to playing old games, and relaxing this holiday!