Shtting down error on XP

When you get this error message during the shutting down of your computer: "It's Now Safe To Turn Off Your Computer" do this below mentioned troubleshooting steps:

Click [Start] [Control Panel] [Performance and Maintenance] [Power Options]
The Power Options Properties Property Sheet will open.
Click the APM tab and check the box to [Enable Advanced Power Management Support]

Start Regedit and navigate to
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon
Set the value of PowerDownAfterShutdown to 1.

If the value isn't present, add it by creating the string value PowerDownAfterShutdown and setting the value to 1.

Note: The success of this registry edit is dependent on Hardware Abstraction Layer (HAL) support.