Warning for Windows 10 users:
Make sure that you reboot immediately following the GeForce driver update. Failure to do so can result in a broken Start menu, lost and disordered desktop icons, and/or an unstable operating system.
Make sure that you have an Internet connection if you plan on updating with the GeForce Experience option selected and do not attempt that in Safe mode, because it could corrupt the installation and result in an unstable operating system. I suggest and Nvidia recommends the Express installation under Windows 10, with an immediate reboot following a successful installation.