Method one - search bar, type powershell, right click, run as administrator copy everything between the following brackets - [wmic path softwarelicensingservice get OA3xOriginalProductKey] and paste it in (or type it you lazy fuck) it will return the original key from the PC. This key will not work if you have made major hardware changes, are swapping in an HDD from another PC, using it on a different level of Windows, or a home build that came with alternative or no OS. better method - you look up rattiborus kms and never bother asking that question again youre welcome.