I have the same problem . Android works correctly, but windows doesn't starts . i have a black screen for few seconed and it shut down .
because of the shut down the windows go to automatic repair all the time, so and i do reset to win and clean the drive c , and it not help and i dont have the serial to do win 10 activiate .
how can you help me ?
can i get the files to install win 10 + android 5.1 to do a fresh install .
i need also a full guide how to do it