Windows 10: Do I need to re-buy a digital Windows 10 license if I upgraded my PC Hardware?

Hi Folks,Apologies if this has been posted before I definitely think it will have.... I can't figure out how to navigate these forums at all. Little background, many years ago I purchased a physical copy of Windows 7. I was then eligible for the upgrade to Windows 10. PC has run swimmingly for the past 9 years on Windows 10 Home.I recently upgraded my motherboard and CPU which has caused Windows to de-associate the hardware with, what I presume to now be, my digital Windows 10 licence Error Code 0xC004F211. So now I've got that lovely 'Activate Windows' watermark in the corner of my screen

:)

 

Windows 10 upgrade license

Hello guys,

I have 1 license of WIndows 8.1 FPP/retail license. I want to upgrade to WIndows 10, but I one thing is unclear to me.
If I upgrade, will WIndows 10 license be retail or it will "turn" into some sort of OEM license?

I ask this because I upgrade my PC, you know, more memory, replace HDD, and I intend to upgrade the MB and CPU to Kaby Lake platform sometime in the future, (and of course sell the replaced hardware)
This thing is not clearly mentioned anywhere.

Thank you.

 

Windows 10 upgrade license

The interesting question is that: the upgrade takes place before 29 of July. If I upgrade the PC (change the MB), and I transfer the Win 8.1 license to this new PC (cause 8.1 is retail FPP), will I be able to upgrade to Windows 10 for free? Or a upgrade license must be bought?

 

Transferring Windows Digital License after significant hardware change

I've significantly upgraded my PC (new motherboard, storage), to the point where Windows 10 doesn't recognise it as the device I had my Windows 10 digital license on. When I go to settings - activation, I get error code 0xc004f213 which states no product
key was found on this device (I'm signed into my microsoft account which has the digital license from before). I proceed to trouble shoot, and then click I recently changed hardware on this device. It proceeds to take me to a screen which lists my devices,
but it only shows my Laptop which is running a separate product key/digital license (I bought windows 8.1 for my laptop and took the free upgrade, whereas this desktop PC was on windows 7 before I upgraded to 10). My PC isn't showing on this list.

I've been using this guide How to reactivate Windows 10 after a hardware change

So how do I go about re-activating my Windows 10 Digital License on this device? Also, is livechat only open at certain times? because I've been trying to find it but I get directed to this forum and a phone number instead.

If this classes as a new PC due to the motherboard change do I need to buy a new version of Windows? If so, then is the license fixed to my old motherboard?