These instructions were taken from the Nvidia site and can be found here: NVIDIA Driver Help Help Installing Drivers: Q: After I click Agree and Download, should I select Run or Save? A: You can select either depending on your preference. If you want to save the driver for use at a later time or on a different PC then you should select Save. If you want to download and start installing immediately then you can select Run. Q: Do I need to uninstall my older driver first? A: No. It used to be the case that an uninstall was first required. Today the recommended method is to overinstall the newer driver on top of your older driver. This will allow you to maintain any current NVIDIA Control Panel settings or profiles. Q: I want to go back to my older driver. How do I do that? A: If you overinstalled the newer driver over the older driver then you can roll back to the older driver. Instructions can be found here: Option 2: Roll Back To Your Previous Driver.