Article: Click the Windows logo in the bottom-left corner of the screen. This will search the computer for the Command Prompt app. It's a black box at the top of the Start window. Command Prompt will open. You must be on an administrator account in order to retrieve your key in this way. Type wmic path softwarelicensingservice get OA3xOriginalProductKey into Command Prompt, then press ↵ Enter. You should see the 25-character product key appear directly below the command that you entered; this is your product key.   Take a screenshot of the results or write down the key to make sure that you have access to it if needed. If this command doesn't work, you'll need to use ProduKey to find your Windows product key.
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Open Start . Type command prompt into Start. Click  Command Prompt. Enter the product key retrieval code. Note your product key.