Vista ACPI Issue

[Guest]

I upgraded my XP SP2 to Vista Home Premium about 6+ months ago (sometime in
March). I came home last Wednesday (10/3) to a reboot loop and my system was
suddenly not ACPI compliant for Vista. Couldn't repair with Vista or
anything. ACPI is enabled in the BIOS and always has been and I've upgraded
my BIOS to the latest version and it still won't install.

Any ideas why Vista would suddenly no longer work or install after working
great for 6+months

 

[Phillips]

one frequent cause of "poping up" errors is automatic driver updates -
either via Windows Update or other automated updaters. Try to roll back
drivers that might be at fault - ex. see installed updates in Windows
Update.
Michael