[tomsolomon]

Does your PC have an onboard graphics card? If so you need to dissable this in the bios before your Nvida card will work. Windows will automatically detect your new display adaptor due to the fact that your monitor should be plugged into it. But if your onboard is still active this will cause a hardware conflict. Failing this download Nvidas controll panel or powerstrip and see if this software detects the card. This may solve your problem. You can also try problem solving to check your setup is correct also run dxdiag, as this can detect if your system settings are correct.
tomsolomon...