CPU and MONO Failed - Still Using W10?

Usually the license is transferrable one way or another.

How did you acquire your Win 10 license? What evidence do you have?

In particular, if it's linked to your MS account- if you use one- that should be relatively easy.

This is how you would have linked your license to your MS account, assuming you use one.
Link Microsoft Account to Windows 10 Digital License

This - also from the huge searchable tutorial section- do have a look - is worth reading:
Use Activation Troubleshooter in Windows 10
and may help you.

There's enough here about MS accounts for you to decide if you have one or not.
Switch to Microsoft Account in Windows 10

Further, if you have one, you will be able to sign in here:
https://account.microsoft.com/account?lang=en-hk