Switch Windows Xp HAL from Standard PC to ACPI without reinstall
So you’ve installed Windows Xp on a (probably very) old computer and forgot to check the BIOS to make sure APCI is enabled…
Now to switch Windows Xp from the “Standard PC” HAL to the A(dvanced) C(onfiguration and) P(ower) I(nterface) one you’ve got two choices…