Entering the following lines into an admin Command Prompt or PowerShell worked to display the OEM key embedded in our system's UEFI/BIOS. However, these commands didn't return any keys on other two machines we used for testing despite Windows 10 being activated. wmic path softwarelicensingservice get OA3xOriginalProductKey or powershell "(Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey" There's also a commonly cited Visual Basic script that retrieves registry-based Windows keys (not those stored in the UEFI/BIOS). You can download the script here . Copy this text and paste it into Notepad, saving it as a .vbs file. Then double-click to launch the file.