Do you mean that the windows product key on the bottom of the laptop is useless?
Exactly!
Does that mean that the only way I can fix the laptop is to spend more money buying a OS system from Microsoft, which is to fix a problem that they created!!
The only way to fix this issue is to reinstall the OS.
You can use either recovery disk or Microsoft disk.
If you don’t have one of both disks then you have to purchase a one!