"It's possible that the BIOS setup has been accidentally set to non ACPI mode. Check in the setup to ensure ACPI is enabled.Other possible causes are memory expansion, overclocking and incompatible driver software. Check out what you have recently installed or updated on your computer.This can occur if Windows has detected that the BIOS in the computer is not fully compliant with Advanced
. Configuration and Power Interface (ACPI).To correct this problem, contact the manufacturer of your computer to obtain a BIOS update that is fully ACPI compliant. (If your PC is an older model, a BIOS update may not be available). There are third party companies that will write a BIOS update for your computer for a fee which may make it more cost effective to replace your computer.You may also find help on this Microsoft Support Site:http://support.microsoft.com/kb/314830"
