Testing the hardware
1 Notice when your Nvidia card fails. Note when the problem occurs during periods of high stress, such as in a game or while playing a video is rendered. If so, there may be a hardware problem.
2 Runs a graphically intense game or other software. Let it run for several hours. Listen to the fan on your graphics card (if any) to see if it starts to spin faster as the program runs. If the program falls, the computer crashes or if Windows shows you the error message of the "blue screen of death" usually is a hardware problem.
3 Download the ATI TechPowerUp.com tools to your desktop and double-click its icon. Tools will test your ATI graphics card to render a graphically complex image. Follow the installation instructions and make a shortcut for your desktop ATI tools. Double-click the shortcut to run the program. Click on the "Scan devices" to start testing your graphics card. Allow the test to run for an hour and see if there is a graphical error or "artifacts" produced in the window displaying the "hub" within the ATI tools. If any device is listed, it is likely that your graphics card has a hardware problem and will need to be repaired or replaced.
Reinstalling Drivers
1 Go to the download page for Nvidia drivers in your browser, Nvidia.com. Reinstall your controlares all starts "from scratch" and removes corrupt drivers troubleshooting equation.
2 Download the driver file to your desktop and double click it to start the installation process. Follow the installation instructions and restart your computer when you do so.
3 Runs a program to test your heavy video graphics card.