Outlander_04 :
Windows licensing conditions changed after win 7 .
There is no oem and retail version of Win 8
There is a 'home user license" which allows you to swap it from mb to mb , so long as it is not on both at the same time
Thanks.. I am not convinced your advice will hold.. changing MOBO is usually what breaks the link with the activation process, even for WIN 10.
This article seems to explain and confirm that the OP may well have to contact MS..
http://www.howtogeek.com/226510/how-to-use-your-free-windows-10-license-after-changing-your-pc%E2%80%99s-hardware/
Thanks for your reply - I am more aware now