We are in Control Panel now, change the view option to Large Icons, then double click on the Nvidia Control Panel.A Run box will appear, Now type Control and hit Enter) Go to Control Panel (You can also Press Window+R key together.Here are some simple steps to fix this issue and bring back your missing Nvidia control panel.
There is a possibility that during the update of your Nvidia Graphics card software the setting of the application may have changed, which results in hiding the Nvidia control panel.