I have installed XP Pro on several computers (generic) and made sure that ACPI was enabled in the BIOS, but for some reason, XP did not install the ACPI components, and now these machines will not automaticly turn off. Is there a way to force XP to add ACPI? And does the same limition from Win2K still stand about multi-cpu systems not being able to use ACPI no matter how compliant the mobo is?

Thanks for any help.