: For systems where the key is embedded in the firmware, you can run the command: wmic path softwarelicensingservice get OA3xOriginalProductKey .
Once you have your product key, follow these steps to activate your system: Find your Windows product key - Microsoft Support windows 7 ultimate 32 bit product key
: Utilities like NirSoft ProduKey or Belarc Advisor can scan your system and display the 25-digit key for you. : For systems where the key is embedded
If you already own a license but cannot find the physical code, there are several ways to retrieve it: windows 7 ultimate 32 bit product key