i recently upgraded my computer with windows 7 and i am having problems getting my video cards working, i have the latest nvida drivers and windows updates installed. i will load a game and i get a flashing black screen and absolutely nothing showing. i can ctrl+shift+esc and load the task manager and it close the game and it goes back to the desktop. i then turned off the sli and i am running a single gpu and it works fine. well not fine because i am only running a single gpu and not getting the full performance i should be. some leads on why this is happening and how i can fix it?
motherboard - ASUS P5N32-SLI SE Deluxe
cpu - Intel Core 2 Duo e6400 2.13GHz
video card - nvidia geforce 7950 GX2