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Im positive my machine supports ACPI power management because it works under Windows 98, but when I install Windows 2000, I can only use the older APM power management. What gives?

April 26, 2017acpi install Machine Management positive power supports Windows

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Im positive my machine supports ACPI power management because it works under Windows 98, but when I install Windows 2000, I can only use the older APM power management. What gives?

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Windows 2000 is far more stringent when it comes to adhering to the ACPI power management specification. As a result, you need to make sure you have the most up-to-date system BIOS before you install Windows 2000 (you can’t add the BIOS update after the installation; Windows 2000 determines the power management scheme it uses only when you first install). Thankfully, Microsoft has created an excellent Hardware Update Web site for people with mainstream machines such as Dell, IBM, and the like. This site will connect you directly to manufacturers’ BIOS and other system updates that you’ll need for Windows 2000. If you’re using a home-built or other custom system, check with the Web site for your motherboard manufacturer for up-to-date BIOS updates.