Then chances are it’s a KMS/Volume license.
If the cost was much lower than a genuine license from Microsoft then this is certainly the case.
Run this cmd within powershell with admin powershell “(Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey”
Or wmic path softwarelicensingservice get OA3xOriginalProductKey if using cmd prompt.
Or: Check this program to reveal if there’s a key embedded in the BIOS:
https://neosmart.net/OemKey/
Or: Download and run this: https://www.microsoft.com/en-us/p/showkeyplus/9... to find all keys used on the PC.
If it doesn’t show any key then don’t worry as this is normal if the PC came with Windows 10.
If it shows a key then please let me know - do not post the key.
Also run this to see what is currently installed & post the screenshot:
Right click on start & choose powershell with admin & enter: slmgr.vbs /dlv
This will show a popup showing whether your license is OEM, Retail, or Volume amongst other information.
If this states you have a volume licence then there is away to return to a legal key if there's one in the BIOS.
If it does please post back.
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.