You could also try using the Activation Troubleshooter again, but specifically choose the "I changed hardware on this device recently" option. Another option is to contact Microsoft support directly—they can often push a reactivation through on their end.
You could also try manually entering your Windows 10 product key in the activation settings. Another option is to run the Windows Update troubleshooter to fix any underlying update service issues.
Yeah, You could also try using the Activation Troubleshooter again, but this time select the "I changed hardware on this device recently" option. Good luck!