Sorry to bump this, buy I'm encountering the same error on my Z170 PC (GA-Z170X-UD5 TH) with XP SP2 x64
In the BIOS/UEFI I've enabled the Platform Power Managment menu entry which contains several "child" submenus: PEG ASPM, PCH ASPM, DMI ASPM
Any idea how to solve/bypass this?