Launch Command Prompt (which is already available on ALL Windows versions) as administrator and run this command:
wmic path softwarelicensingservice get OA3xOriginalProductKey
This quick tutorial shows you how to retrieve your Windows product key from a working system. This is helpful in cases where your device doesn't have a sticker.
Open powershell (Press the Windows Key, then type powershell)
Type the following command
The output will be your 25 character...