Launch Command Prompt (which is already available on ALL Windows versions) as administrator and run this command:
Code:wmic path softwarelicensingservice get OA3xOriginalProductKey
I posted this in the tutorial section about 3 years ago Retrieve your Windows Product Key without extra software
Launch Command Prompt (which is already available on ALL Windows versions) as administrator and run this command:
Code:wmic path softwarelicensingservice get OA3xOriginalProductKey