When I was upgrading my PC from Windows 7 to Windows 10 while it was free, it crashed upon reboot, so I was forced to recover to Windows 7 (which still corrupted over 2000 files). Since my PC was connected to Internet during the whole upgrade process, and that Windows Update might have been installed, there might be a chance that my hardware ID was registered on Microsoft's servers even though I had not been able to boot into Windows.
Now my Windows 7 is getting buggy and I want to try out Windows 10's new features. Before I purchase a new hard drive to install Windows 10 afresh (dual boot with partition not an option due to limited space on current SSD), is there any way to check with Microsoft whether my current hardware has indeed been registered as having a Digital Entitlement/License?
Alternative use case might be for someone who purchased a secondhand PC to check if a Windows 10 license has been included or not.