function OnPowerOff()
	{
		try {
			// Start the LED indicator to show that we're working
			DeviceControl.PowerLED = LED_BlinkSlow;

			// Grab the memory state before we tear everything down
			var MemoryState = TVShell.EventLog.SystemMonitor.MemoryState;

			// Turn off UI sounds
			DeviceControl.PlayMute = true;

			// Stop audio.
			StopDialingMusic();

			DeviceControl.StopPlayingSound();
			
			// Turn off the display
			DeviceControl.TVEncoder.OutputEnable = false;

			// Remove the active page
			TVShell.URL = "msntv:/Shell/PowerOff.html";

			// Persist print setting 
			TVShell.PrintManager.SaveObject();

			// Switch to main panel
			PanelManager.Show("main");

			// Turn off the screen saver and keep it from starting while
			// we are off.
			TVShell.ScreenSaver.Stop();
			TVShell.ScreenSaver.Enable = false;

			// Remove all panels (except for main)
			RemoveAllPanels(PanelManager);

			// Sign out the current user
			TVShell.UserManager.ClearCurrentUser();

			// If a user was authorized, then the MeterManager, PolicyManager,
			// and LoginManager would have already been cleaned up.

			// No need for metering
			TVShell.MeteringManager.Stop();

			// Cleanup on PolicyManager and LoginManager
			TVShell.PolicyManager.Cleanup();
			TVShell.LoginManager.Cleanup();

			// CleanUp PhotoManager caches and temporary photos
			TVShell.PhotoManager.ClearThumbnailRequestQueue();
			TVShell.PhotoManager.ClearImageResizeRequestQueue();
			TVShell.PhotoManager.ClearTempPhotoDirectories();

			//
			// The service is no longer connected
			//
			TVShell.ConnectionManager.ServiceState = Service_LoggedOff;

	        // Unmount all shares and lose passwords that are mark as 'no save'
		    if (HomeNetworking)
	            HomeNetworking.PowerOff();

			// Hangup
			TVShell.ConnectionManager.WANDisconnect();
			TVShell.ConnectionManager.LANDisconnect();

			// Clear the non-persistent service list
			TVShell.BuiltinServiceList.Clear();

			// Remember power state
			TVShell.Init.PowerState = PowerState_Off;
			TVShell.Init.Save();

			// Make sure all the ConnectionManager settings are saved and flushed to the bootrom
			ConnectionManagerSave();

			var BootROM = new ActiveXObject("MSNTV.BootRom");

			BootROM.Read();
			BootROM.PowerOnState = false;
			BootROM.Flush();

			// The threshold for memory to decide if we want to exit the browser while powering off is a litle higher (5MB) than Memory_low (2MB)
			var AvailVirtualMemory = TVShell.SystemInfo.AvailVirtualMemory;
			var AvailPhysicalMemory = TVShell.SystemInfo.AvailPhysicalMemory;
			var fReducedMemory = (AvailVirtualMemory > kReducedMemoryThreshold && AvailPhysicalMemory > kReducedMemoryThreshold) ? false : true;
			
			if (fReducedMemory) {
				TVShell.EventLog.Warning("Shell: system low on memory, browser exiting...");
				RemovePanel(autopanel.name);
				setTimeout("QuitWhenComplete(0)",100);
 			} else
				PowerOffWhenComplete(0);
		}
		catch (ex)
		{
			TVShell.Reboot();
		}
	}