If you've purchased a product key but lost it, Microsoft provides tools and support to help recover or replace lost keys.
If you need a functional operating system, it is safer to use Windows 10 or 11 . Microsoft often allows users with old Windows 7 keys to upgrade for free, or you can use the operating system in a "trial" mode legally without third-party activation tools. windows 7 loaderactivator v206 reloaded better