Disable the Display Control Panel
Supported on: At least Windows 2000
Registry
HKCU
Software\Microsoft\Windows\CurrentVersion\Policies\System Value name: NoDispCPL
Description
Disables the Display Control Panel. If you enable this setting, the Display Control Panel does not run. When users try to start Display, a message appears explaining that a setting prevents the action. Also, see the "Prohibit access to the Control Panel" (User Configuration\Administrative Templates\Control Panel) and "Remove programs on Settings menu" (User Configuration\Administrative Templates\Start Menu & Taskbar) settings.