Hey guys, So. I have this laptop that came with Windows 8 core. I installed windows 8.1 Pro N x64 update 3. It is VL. Then I upgraded to Windows 10 Pro N x64 april 2016 update. I could not activate win 10 Pro N. I kept getting the digital entiltment error. I tried Win 8.1 Pro N x64 retail version same issue =\. What am I doing wrong? How do I activate it? Please, any help?