Say, you don’t want other users to fiddle around with your system settings and would like to completely disable access to Control Panel for all users then you can achieve this by simply adding a new registry entry.
To start the registry editor, type regedit in the Start menu search text box and press enter. Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer and create a new REG_DWORD entry named NoControlPanel with a value of 1.
Key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ Policies\Explorer
REG_DWORD (32-bit) Value name: NoControlPanel
Value: 1 (1=enable feature, 0=disable feature)
A word of caution – incorrectly editing the registry may severely damage your system. The above modifications are intended for Windows advanced users who are familiar with the registry editor. Users are also reminded to back up the registry before making any critical changes.