Respectfully, and I know it's just that you don't have the proper information, but your post is completely erroneous regarding Windows 10 keys.
From Microsoft:
Installing Windows 10 using the media creation tool - Windows Help
I will explain this again. There are two ways to get Windows 10 to activate on a computer for the first time. The first, and most common way, is to upgrade from a previously activated Windows 7, 8, or 8.1. Windows 10 will read the activated status of the previous operating system using the program gatherosstate.exe found in the sources folder of the Windows 10 ISO or ESD and saving an xml file generated from that program. The previous license for the previous OS is used to activate Windows 10. The second way to activate Windows 10 for the first time on a computer is with a unique Windows 10 product key that is either provided in bios by the manufacturer of the computer or purchased from Microsoft. The key in bios will be for Windows 10, not for Windows 7, 8 or 8.1.
Now, most people are doing the free upgrade from a previously activated Windows 7, 8, or 8.1. Once Windows 10 reads the activated state of the previous OS using the program that I pointed you to, it contacts Microsoft's activation servers and provides that license information. In addition, it provides a unique Installation ID - which is created by a combination of a generic Product Key, which is exactly the same for the same version of Windows 10 that everyone gets when upgrading. All home versions from upgrades have the same key, all pro versions from upgrades have the same key, etc. In addition to that same generic product key, a hardware ID is generated by Windows 10 from a bunch of different factors related to the hardware of the computer. The unique hardware ID + generic product key generates a unique installation ID. The previous license information generated by the program is used to push the installation ID onto Microsoft activation servers.
This installation ID is stored on Microsoft activation servers during the first activation. Now...here's what happens on a clean install. During a clean install Windows 10 generates an installation ID based on two factors. The hardware ID created by the specific hardware combination of the computer - which will be the same if it is the same computer - and a product key. If no product key is provided - and a user should never provide a product key unless it is one that they have purchased - the generic product key will be used by Windows 10 automatically. This creates the same installation ID that was created before on that computer. That installation ID is sent to Microsoft activation servers. Since there is no license information from a previous OS, because it is a clean install, the installation ID is not pushed to the Activation server, it is used to search the Activation server. If it was pushed previously, the installation ID matches a previously stored one, and Windows 10 is activated. Unless the manufacturer has put a Windows 10 key in bios - Windows 10 will not push, nor retrieve any keys from bios.
The most important fact, in summary is
a user should NEVER enter any key for Windows 10 unless they have purchased a unique key for Windows 10.
These are the generic product keys that Windows 10 produces when a free upgrade is performed:
RTM:
Generic Windows 10 Home TX9XD-98N7V-6WMQ6-BX7FG-H8Q99
Generic Windows 10 Home Single Language 7HNRX-D7KGG-3K4RQ-4WPJ4-YTDFH
Generic WIndows 10 Pro VK7JG-NPHTM-C97JM-9MPGT-3V66T
Generic Windows 10 Enterprise NPPR9-FWDCX-D2C8J-H872K-2YT43
Everybody that has done an upgrade from Windows 7/8/8.1 has the same keys. They can (but should not) be used to install Windows 10, but unless there is a matching Hardware ID that has been activated before based upon a previous license for Windows 7, 8 or 8.1, they will not cause Windows 10 to be activated.