Remove options to Shutdown using the Start menu and the task manager

Merge the following into the registry to remove access to shutdown using the Start menu and the task manager.

Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] "NoClose"=dword:00000001

You can shutdown using the command prompt or by first logging off. to get it back change the value of NoClose to 0 or delete the key.