No Bluetooth keyboard is a starter! To access any of the UEFI settings you need a keyboard (or so I'm told). The UEFI sector is a bit dodgy on the chinatab I've got as well (Teclast X98 Air 3G - the name flows off the tongue, doesn't it?) , 32-bit only, but it is possible to install a dual boot UEFI 'bios' so I could partition the internal memory to have both an Android and Win 8 partition. I don't use it too much so the Android 4.4 installation is fine for now, but I may well transition to Win 10 if I get the chance. I have techie urge to try out Win 10, however, when the time comes!