I recently bought a Dual OS tablet from China (exact model is ONDA V820W). The Android partition is fine but I'm having an issue with the Windows 10 one. Somehow I got it so it's not booting properly and keeps saying it needs to do the repair or reset (which I did previous and got stuck at 55% and now it won't do anything). I can't get into the BIOS or anything (even to push the reset button in the windows 10 setup because you need to use a keyboard. However, I can't plug in a keyboard (using a USB hub) because the port must not be working because none of the hubs or adapters I have work (both brand new). I'm stuck and I don't know what else to do. Please help!!! I've looked on Forums and Google for days and can't seem to find anything that will help. I hope there's someone out there who knows about tablets and can assist. Thank you!