how-to how to transfer your windows 10 license to a new computer?
To move a full Windows 10 license, or the free upgrade from a retail version of Windows 7 or 8.1, the license can no longer be in active use on a PC. Windows 10 does not have a deactivation option. Instead, you have two choices: Uninstall the product key – this is the closest to deactivating the Windows License.