I installed android 5.1 (after downloading from the techtablets download area) and rooted it by Kingo Root (from techtablets download area) and then i booted to BIOS by pressing DEL and selecting micro USB containing windows 10 and after exit and save from BIOS windows installation started . The installed windows 10 was from onedrive link by teclast . I had teclast keyboard accessory so i did not needed usb hub. It is working absolutely fine.