Show you how to find your original product key if you still have the computer. Let me know which of these you'd prefer! How To Activate Windows 7 Ultimate 2020

Microsoft no longer supports Windows 7, leaving it vulnerable to exploits.

This is the safest method as it uses built-in Windows tools to reset the activation timer. Open Command Prompt as Administrator. Type slmgr /rearm and press Enter. Restart your computer.