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Windows 7: ACPI Compliancy

21 Jan 2010   #1

Windows xp
ACPI Compliancy


I'm currently trying to upgrade from windows xp to windows 7. Every time i try the install it tells me "This computer is not compliant with the Advanced Configuration and Power Interface (ACPI) standard. Windows must be installed onto a computer that supports ACPI. Contact your computer manufacturer for a BIOS update or install Windows on an ACPI-compliant computer."

I checked and the BIOS is updated and i have the ACPI option enabled.

My mother board is an MSI K9A Platinum and IS (supposedly) ACPI compliant.

Other notes: I built this computer about three years ago with some friends and have at one point had the Windows 7 Release Candidate installed so i know it works.


My System SpecsSystem Spec

21 Jan 2010   #2
Microsoft MVP


Are you booting from the Windows 7 DVD? You want to select Custom install, then use Drive Tools to delete XP, create new partition(s) as you wish, format before installing Windows 7 to first partition.

If you are booting DVD, then try resetting CMOS: Clear CMOS - 3 Ways to Clear the CMOS - Reset BIOS You may need to set DVD drive to boot first afterward.
My System SpecsSystem Spec
22 Jan 2010   #3

Windows xp

Thanks for the reply,

I am not booting from a DVD. It is a digital version of Windows 7 ultimate that i downloaded.
My System SpecsSystem Spec

22 Jan 2010   #4
Microsoft MVP


Create a bootable DVD or flash installer, which you need for repairs anyway, using this: Bootable ISO - Create from Installation Files

Windows 7 USB/DVD Download Tool

Then trying booting from the DVD to install.
My System SpecsSystem Spec
27 Jan 2010   #5

Windows xp

Thank you, i have created a bootable DVD and looks like it will work. However, i was wondering if there's a way to install it and keep all my data? Or can i not get around reformatting my hard drive? It's no big deal if i have to reformat but it would save time if i could keep all my data.
My System SpecsSystem Spec
27 Jan 2010   #6
Microsoft MVP


You have to do a clean install from XP anyway, so might as well format to get the cleanest possible.

Can you back up your files to an external drive or DVD's? If not, you could make a data partition to store your data, then format only the XP partition to install Windows 7 there from the booted Windows 7 installer.
My System SpecsSystem Spec

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