Hello
Launch Powershell (note, it is not Command Prompt, but Powershell), and run this code to see if you have an OEM license on the motherboard. If the key is not embedded in the motherboard, it will not return a 5x5 license key. So, run this command first to determine that first.
(Get-CimInstance -ClassName SoftwareLicensingService -Property OA3xOriginalProductKey).OA3xOriginalProductKey