I am trying to reactivate windows 7 home premium after fixing a compaq presario CQ62 by reinstalling windows to fix a boot loop. The CD key on the sticker on the bottom of the computer is worn off and unreadable so I extracted the key by removing the hard drive, connecting it to a working laptop, and using magical jelleybean keyfinder. This key will not successfully activate windows. From what I have found, this is because that key is the OEM key and must match with something in the bios but I'm not sure how to make it do this. All I did to this computer was place a clean install of windows 7 home premium on it, install updates and drivers. All of the original files are still in the windows.old folder.