Disable Shut Down, Restart and Stand by button on a Windows machine

This is useful for machines which are e.g. in a Meeting Room and always need to be on,

• Open Registry Editor (regedit.exe) in Run under Start Menu
• Navigate to:
  HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionPoliciesExplorer and to
  HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionPoliciesExplorer
• In both these locations create or modify the Dword value ‘NoClose’ & set it to 1. This will prevent windows from shutting down
• If you want windows to get shut down again then set the above value to 0

• Go to: Start > Control Panel > Administrative Tools > Local Security Policy
• Security Settings > Local Policies > Security Options > Shutdown: Allow system to be shut down without having to log on: Disabled

If you still want to Shut down or Restart the computer do it with the shutdown command:

Usage: shutdown [-s | -r] -s Shutdown the computer -r Shutdown and restart the computer