Graphics Card Problem

Uninstall current graphics card drivers. Before you install your new card, you'll need to uninstall your current graphics card's drivers to avoid any potential conflicts. Right-click My Computer and select Properties. Under the Hardware tab, find the button to open the Device Manager. Your graphics card should be listed under the Display Adapter heading. Double-click the name of your graphics card to open a properties window for your current card. Under the Driver tab, click the Uninstall button.

Reinstall your new card.

Ad hoc methods might work with ATI based cards, but since you have a NVIDIA, I'd rather follow the instructions given by the manufacturer. ➡ http://www.nvidia.com/object/driver_installation_hints.html

I have followed these instructions each time I've installed new drivers for my NVIDIA card and never experienced any problems.

Another thought to keep in mind is that when your Windows prompt says: "Verify that you have the latest drivers installed for your video card." --it is not necessarely to be taken literally.

Often previous versions of drivers are better or work better with your particular card. So if the latest version is disappointing, try an earlier version.

As you didn't mention which OS your running, you could be experiencing difficulties with Vista. More at the Drivers Download Page ➡ http://www.nvidia.com/content/drivers/drivers.asp