The trick with this tablet is that it has a 32 bit bootloader even thou it can run 64 bit OS because it has a 64 bit intel atom processor. You need to create a special 32 boot to place on the booting sequence of the x64 OS. Also this tablet has secure boot. you need to disable it(Can be done in bootloader). If you get into EFI Shell (White and Yellow Lettering stating USB devices) simply write “exit” and hit enter on your keyboard. This should boot you to the bootloader screen. From there as mention go into secure boot to disable it, Install any OS.
Also the drivers and components for this tablet are on this website:
https://drp.su/en/laptops/noname/dl808w?os=windows-10-x64
I am not affiliated in any way to this website but is the only place I was able to find information on the tablet.