Windows 10: Unable to reactivate Windows after changing Motherboard

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Merry Christmas, gamers! Want help getting started with your new device? :​

hey I switched my motherboard and it just doesn't want to reactivate plz help me dude




***Modified title from: Switched my motherboard and it doesn't want to reactivate***

:)

 

Motherboard change unable to reactivate Windows 10 Pro -


Out of curiosity, what does it say under Activation in Settings?

 

Motherboard change unable to reactivate Windows 10 Pro -


I have searched this topic and everything seems to be almost a year old. This is a homebuilt machine circa 2015. It started with an ASUS FM2+ motherboard with an AMD A5600K processor. It was Windows 7 Pro, upgraded to Windows 8.1 Pro then to Windows 10 Pro.
Saturday the motherboard died. An exact replacement could not be located so a Gigabyte card was installed. No changes to the hard drives. Booted the machine and Windows automatically started and then did a "revert" then installed the latest updates. C Drive was in the red so I deleted all of the old install files using Windows Clean-up. Went to reactivate, checked the significant hardware change and entered my MS account information - The computer (none of my computers) were listed and now it is telling me that I have to spend $200 to buy a copy of Windows 10 Pro.
Have not yet called Customer Support as the computer is at home and I work during the day -
I do have a disk image or two that may be a year old -

Suggestions - should I just shell out the $200 and move on

TIA

 

Unable to reactivate Windows 10 after motherboard change.

I purchased Windows 8 and upgraded for free to Windows 10 when I still had my old motherboard. Now it doesn't let me reactivate it.

I followed these steps:

• Select the Start button, select Settings > Update & security > Activation , and then select Troubleshoot. You must be signed in as an administrator.
• The troubleshooter will show a message that Windows can’t be activated on your device. Select I changed hardware on this device recently, and then select Next.

After that I just get this message:

Unable to activate Windows

We can’t find any devices linked to your Microsoft account that can be used for reactivating the device you’re using right now. Make sure you’re signed in with the same Microsoft account you linked to the Windows 10 digital license
on this device or try again later.

But I am signed in with my only microsoft account and when I sign in to Microsoft - Official Home Page and look at my account I can see my PC's name together with my old motherboard name as a device.

Do I have to buy a new Windows 10 now or what am I supposed to do?