VISTA installation load failure - ACPI not compatible

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Guest

Hi, i tried to install Windows VISTA Beta 2, on my home PC, but immediatly
after booting from intallation DVD, just after installation environment
loaded it's files i got the following error message:

Info: "Windows failed to load because the firmware (BIOS) is not ACPI
compatible"
Status: 0xc0000225

I have checked characteristics of my motherboard (it was produced in 2001,
but i'm sure that it supports ACPI) - here it's specification, which approves
ACPI compatible.

http://www.via.com.tw/en/products/chipsets/p4-series/p4x266a/

Anyone got the same problem? Could you please specify what certainly is not
supported by my motherboard and advise some solving of the problem? May be
BIOS reflash would help or my computer is absolutely not compatible with
VISTA?

Thanks for any help!
 
Wouldnt surprise me if that board is not fully ACPI compliant, as it doesnt
even support DDR RAM above pc 2100 or even support 8x AGP. A BIOS flash may
help...but you might have to bite the bullet and buy a new board if you want
to run Vista.
 
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