I changed my motherboard and CPU (I had an Asus P4p800-x). When I tried to boot up my Windows XP and Windows 7 they both failed!.
After searching for many hours I found these crashes were due to the former motherboards drivers being present. I was following how to repair Windows 7 install after replacing motherboard, but since my motherboard doesn't have any official drivers for Windows XP, I can't do the same thing for the Windows XP part.
I have access to the Windows XP installation partition. Can I do something about it from my current Windows 7? What can I do to boot up my Windows XP?