This is the fastest way to expose the setting in your advanced power options.
// Sends a system command to the main monitor handle (IntPtr.Zero) to power down. SendMessage(IntPtr.Zero, WM_SYSCOMMAND, (IntPtr)SC_MONITORPOWER, (IntPtr)MONITOR_OFF); console lock display off timeout
| Scenario | Without policy | With policy (set 10s) | |----------|----------------|------------------------| | Lock PC, walk away | Display stays on until normal idle timeout (e.g., 15 min) | Display off in 10 sec – saves power/privacy | | Presentation / remote desktop | Monitor stays on needlessly | Off quickly – useful for shared consoles | | Kiosk mode | Screen stays lit while locked | Immediate off for energy savings | This is the fastest way to expose the