I recently upgraded the motherboard, processor, and memory. Since I had XP OS, i did the repair install. After that I had to reactivate XP on line, which was no problem. I have since cloned my drive with DriveImage, and just to make sure that in an emergency I would be able to swap out the drives, I booted up with the cloned drive. Just as the desktop was to come up, It said that extensive changes were made to my system and that I would have to reactivate in 3 days. I put my original drive back in and there were no messages. I thought that when you cloned a drive, it would be exactly like the original. Is this not true?