> I love how the upgrade advisor makes no mention of needing ACPI being turned
> With Windows XP and my ASUS A7N8X motherboard, I had to disable ACPI and
> load it as "Standard PC" because I was having IRQ issues. Once I disabled
> ACPI I had no more crashes on the PC. So I take a 40GB hard drive and do a
> full install of XP. Then Upgrade it to Vista Home Premium to test it out and
> it works fine. I pull the 40GB hard drive out and plug my 120GB XP Hard drive
> back in. I get a "Bios is not ACPI complaint" error. Everytime I reboot my
> computer it says it's ACPI compliant. Considering that on another hard drive
> on the same motherboard and BIOS I can install Vista, this error shouldn't
> even come up. Instead of checking to see if my copy of Windows XP has ACPI
This is a very complicated subject, and I'm not sure I understand
everything you have said, but here are some ideas:
ACPI is 'enabled' not by XP or Vista, but by your BIOS. When I
installed XP for the first time I was surprised that I had to disable
ACPI in my BIOS before XP would install.
If you had ACPI disabled in your BIOS when you first installed XP, you
need to disable it again now before you can boot XP again.
Many BIOS's are full of bugs, including ACPI bugs, so these weird things
are very common (even in very new hardware and new software).