If you don't mind, open the box and look at the brand/model videocard, there might be a driver miss-match. If you do find that it's the nvidia card listed in your display properties you may have to choose the driver manually when the detonator installer doesn' find a match. You may want to reference THIS page for little things related to troubleshooting graphics issues. And to manually install a driver that you know is the right one based on the make/model info you see on the card inside the box, check THIS out. You will need to have the driver files downloaded and extracted/installed so they are available in the list of device drivers windows provides.