There are some drivers that can't work in the normal conditions in control panel. So, Nvidia control panel helps the drives to stay optimized in the background and work properly. Sometimes, Nvidia control panel stops working in windows 10 due to some reasons. the reasons can be due to:
1) change in the settings of Softwares
2) Display and graphic driver need updation
3) Your PC needs to be restarted
and many more.
If you want more details then, you can also read an article on the same topic.
Reference link is here: https://worldzo.net/nvidia-control-panel-not-showing-in-windows-10/
