heh, there’s no easy way to get out of that mess. here are my suggestions, but you need to be quite tech savvy to do it
- make a full backup of the system in its current situation. it may be recoverable and you may need to recover it if it’s a MAK activated unit or you’ll lose your windows “license”
- create a usb drive of the windows 10 1607 iso, boot it and select repair, and make it try to repair boot problems
- if the above fails, google on how to fix that problem. as i said it may be recoverable but you will need to make yourself a bootable WinPE usb drive
- if all fails, you need to reflash the windows part of the tablet
all the instructions to do the various steps are around in this forum, most in the big thread of howtos, some other scattered around. won’t be easy tho