Windows 10: Can't activate windows on new hardware

I can't activate windows 10 after hardware change. I recently changed my motherboard and installed a new windows system on a NVMe, i therefore have two windows systems old on SSD - new on NVMe, but on the same microsoft account. When i try to "re-activate" windows it doesn't work and says it cant find my other unit and yes they are both on same microsoft account. On the old system i was able to de-install the license throught cmd and the activate it, in the excact same way i tried on my new system it says it can't find any units which are connected to my Microsoft-account which can be us

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Activation on new hardware

In the activation troubleshooter, when it detects no problems or gets to the end screen, click "I changed hardware on my PC recently", and select the license that corresponds to your PC. You might need to restart your PC.

 

Activation on new hardware

I had already completed the troubleshooting steps you have suggested and the process simply ends up with 'Unable to activate windows'. Error message persists.

 

Activation troubles after hardware chnage

Here's what happened:

• Linked my Windows 10 Pro Licence to my Microsoft account.
• Switched out to a new motherboard, new install linked to my Microsoft account.
• Activation has failed, (Error Code: 0xC004C003) when I try to troubleshoot:
  • Press I recently changed hardware on this device
  • Select the old computer in my Microsoft account
  • Says unable to reactivate windows - try again later - and links to here:
  • https://support.microsoft.com/en-gb/help/20530/windows-10-reactivating-after-hardware-change
  • I've been through it nothing is relevant or helps
• Have been trying for 3 days now - still not activated.

Anyone got any ideas or suggestions on what I can do?

Thanks