While Windows Update delivers all driver ... install if you are facing an issue manually. To use the Device Manager to update Drivers: In my case below, you will see an Intel as well as an NVIDIA ...
If you'd like to toggle it manually or do a more manual install, head over to Nvidia's official driver downloads page.
The reason why you have to disable the internet is because the minute you uninstall your old NVIDIA driver, Windows will automatically install it again and we need to prevent that from happening ...