How to find your Windows product key

 Type this command at the prompt:

wmic path softwareLicensingService get OA3xOriginalProductKey

 

  Type this command at the PowerShell:

 powershell "(Get-WmiObject -query 'select * from SoftwareLicensingService').OA3xOriginalProductKey"

 

 

 

 

Type regedit into the Windows 10 desktop search, and select the appropriate item in the results. Navigate to this key:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform

 

 the BackupProductKeyDefault key will reveal a valid Windows key ( Windows 10)