Press Windows key + X
Click Windows PowerShell (Admin).
At the command prompt, type the following, hit Enter the restart.
PowerShell -ExecutionPolicy Unrestricted -Command "& {$manifest = (Get-AppxPackage \*immersivecontrolpanel\*).InstallLocation + '\AppxManifest.xml' ; Add-AppxPackage -DisableDevelopmentMode -Register $manifest}"
or
Run the following troubleshooter:
https://support.microsoft.com/en-in/help/402749...
If none of the above work...
Run the Start menu troubleshooter:
http://aka.ms/diag_StartMenu
If that does not work:
Press Windows key + X
Click Task Manager
Select the Processes tab
Scroll down to Windows Explorer then select it
Click Restart
If that does not work:
uninstall your display driver:
Press Windows key + X
Click Device Manager
Expand Display adapters
Right click the current display adapter
Click Uninstall
Exit Device Manager
Restart