Ethically, users have a responsibility to adhere to these agreements, which often include clauses about the legitimate procurement of product keys. This means purchasing software directly from authorized vendors or obtaining keys through legitimate channels.
Legitimate keys for Windows 7 are rare now. Consider upgrading to Windows 10 or 11 — Microsoft still offers free upgrades from genuine Windows 7/8 keys in some cases.
OS options like Lubuntu or Linux Mint XFCE are lightweight, free, and receive modern security updates.
Surprisingly, many old Windows 7 keys (if they are genuine stickers on the laptop chassis) still work to activate the equivalent version of Windows 10.
If you have a legitimate license but cannot find your key, it is recommended to use an official recovery method or contact Microsoft Support.