Hive: HKEY_LOCAL_MACHINE
Key: Software\Microsoft\Windows
NT\CurrentVersion\Winlogon
Name: ShutdownWithoutLogon
Type: REG_SZ
Value: 1 Yes
Value: 0 No
Note: some Microsoft documentation lists
this as REG_DWORD. That is incorrect. It is REG_SZ in NT, W2K and XP. ShutdownWithoutLogon can also be set by GUI tool,
RegKey.exe from the Resource Kit. From a security perspective, not particularly
useful unless the power switch is also secured. Another approach is to remove
the user right Shutdown the system. By default
workstation setups grants this right to Everyone, Users, and Power Users as well
as Administrators.