To use these commands, you must always run CMD as an Administrator: Click the button. Type cmd in the search box. Right-click the program and select Run as Administrator . Step-by-Step Activation via CMD

If you have a valid 25-character product key, follow these steps to link it to your system:

slmgr.vbs /xpr

Windows 7 officially reached its end of life in January 2020, but many users still rely on it for legacy software compatibility or older hardware. Activating Windows 7 via the Command Prompt (CMD) is a powerful, built-in method to manage your license without downloading third-party tools.

If Windows was pre-installed (OEM), you might be able to retrieve your key from the BIOS/firmware using CMD: