If you own a genuine Windows 7 Ultimate product key (from an old sticker or retail box), you can still install and activate it. Here’s the safe, “hot” method (meaning up-to-date and effective):
.msu file locally.wmic path softwarelicensingservice get OA3xOriginalProductKey Manual Key Entry: To enter a legitimate key via command line: slmgr.vbs -ipk Legitimate Activation Steps bitly windowstxt 7 ultimate hot