Computer Not Shutting Down in Windows XP is a very common problem faced by many users. It actually catches you by surprise. When you press the Shut Down Button on the Computer, ideally Windows XP should start the shut down sequence and after Windows XP is unloaded, it should turn off the power automatically.
But many a times this does not happen. You may get a caption that says "It is now safe to turn off your computer" After that your computer freezes or hangs up. In some cases your computer may restart once again. This will happen again when you try to shut down your computer every time.
The reason is not very difficult to understand. It is a conflict between what is set in the BIOS (basic input/output system) of your motherboard and the setting in your Windows XP. Windows XP cannot Power Off your Computer if your computer supports Advanced Power Management (APM).
By default the APM (Advanced Power Management) is disabled in Windows XP. It is kept disabled because when Windows XP was released most computers did not support APM. Today almost all Computers support APM. So you need to Enable APM setting manually to fix Computer Not Shutting Down Problem in a Windows XP Computer. Follow the steps below to do it.
To Fix Computer Not Stutting Down Error you need to do the following: -
That is all and you have solved the Computer Not Shutting Down in Windows XP.
If your PC or Laptop is ACPI Compliant (Advanced Configuration Power Interface Compliant) then you will receive this message if your computer does not load HAL. The basic input output system BIOS is ACPI compliant but your PC loads standard HAL which supports only APM. The Windows XP in this case will shut down but it fails to switch the power off to your motherboard.