This CHUWI HiBook 2 in 1 Ultrabook Tablet PC http://www.gearbest.com/tablet-pcs/pp_337072.html is normally in android. Today, I went into Windows 10 and updated to the anniversary. Then installed all updates. Then did a disk cleanup. Then did a the disk cleanup and selected clean up system files . In both cases I selected all items.
Then used the icon to reboot in android.
Now I can see the screen lighting up but nothing happens.
No flashing or other advanced actions taken. Just used the OSs