Installing Windows 10 Pro For Refurb PC's

[LarryTheComputerGuy]

(01-08-2018, 05:37 PM)Britec Wrote:  Larry its also be known to lose activation on change of graphics card which sometimes requires you to call Microsoft via phone and they will decide if they will reactivate.
Change of motherboard and CPU is deemed a new computer.

Reactivating Windows 10 after a hardware change

Previously called Digital Entitlement, when a computer is upgraded from a previous version of Windows; it receives a unique signature of the computer, which is stored on Microsoft Activation Servers. The Windows 7 or Windows 8 genuine license your system was previously running is exchanged for a diagnostics key.


With Digital License, there is no need to know your product key or purchase another product key if you lose it. Anytime you need to reinstall Windows 10 on the same computer, just proceed to do so using any of the available options. Windows 10 will automatically reactivate without asking questions. The only exceptions where the license will be invalidated is dependent on the product channel. If you were previously running an OEM Windows 10, Windows 7 or Windows 8 license; then changing the motherboard will cause the Digital License to no longer work. This will require purchasing a new license. Transferring licenses upgraded from Windows 8 or Windows 7 under the Windows 10 free upgrade is also not allowed under Digital License.

Source 

Yes, but my first thought was that someone may have transferred the internal parts from other PC's to those particular cases and that may be why the attached COA's were not activating...