Windows 10: Windows 10 won't activate with valid product key after hardware change

I recently updated my motherboard and now it says Windows 10 isn't activated. My Microsoft account is logged in but still won't work. It's the same computer with different MOBO. I have a valid Windows key that I bought and won't activate Windows 10. Would appreciate help!

:)

 

Windows is not activated with valid product key

I bought this license and activated this Windows like 1 or 2 years ago, and it's a valid key, I had my Windows Activated and everything works perfectly until today when I saw a watermark at to bottom corner asking me to Activate Windows.

I tried to reenter my product key but it says that I do not have a valid product key and refuse to activate my windows

Is there any solution for this?

P.S. I didn't reinstall my Windows or make any hardware change

 

Windows is not activated with valid product key

The same with me exactly today. I made a call to Microsoft and they ask about my phone number, my email, and name just to say that they cant do nothing at this time, cause a problem is really happening with the activation center server. Unbelievable.

 

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this search might help you https://www.google.com.au/webhp?sou...o+to+get+it+activated+windows+10+blocked+keys

From http://windows.microsoft.com/en-us/windows-10/why-activate-windows-10

If you upgraded to Windows 10 for free and ended up in a non-activated state, try following these steps:

• Go to Start
  
  , then select Settings > Update & security > Activation.
• Select Go to Store, and check to see if a valid license is available for your device. If a license isn't available, you'll need to buy Windows from the Store.
  
  Note
  • This only applies if you haven't made changes to the hardware for your device.

or you could hack it with a crack but please note this is always risky and you don't know what's in the hack