Hello i am trying to downgrade from w7 pro to xp. I have a very specific problem regarding hardware and reinstall is not posible. I have xp pro allready deployed with all hardware installed and runing. Now i wanted to change key and make it genuine via phone activation. Now is the tricky part when i change the XP product key msoobe dont generate windows ID for phone activation according to ms the key is not compatible with the media from where the xp pro is installed. How can I force xp to accept this key and generate valid Windows ID?