Download the latest graphics driver by clicking here for NVIDIA'S website and searching under drivers.  Save the driver to your Windows desktop.  Open Add/Remove Progams in the Windows control panel and uninstall the currently installed NVIDIA display driver.  Then install the updated driver which you saved to your desktop. 

Verify you have all the latest update files (service releases, patches) for your operating system, including Internet explorer, DirectX, Critical files and Security files.  The latest service releases and patches can be obtained by clicking here.