There is a guide to reinstall windows on this site. I had a similar issues and the guide and downloads also on this site would not work. I bought mine from geekbuying and they sent me a link to a backup image of the complete device. I got Android flashed with no problems but could not get Windows to install. I bought a USB mouse, keyboard and and dock with four USB terminals and two USB sticks to do the install and I got farther with there method than the one on this site. Ultimately I had to send the tablet back to geekbuying. Not happy at all. The tablet seems rather unstable in both hardware and software. It’s a shame too because the build quality, screen, and specs were really good for the price. We will see if geekbuying will refund my money. Originally I asked them to fix it but then I decided to just get a refund because what happens if I need to update or reset the tablet in the future and the same thing happens. I really liked the tablet overall but the software integration was really bad.
I really hope you can resolve your issue. If not I could post a link to the geekbuying recovery files. I am not sure if I am allowed to do so. Maybe send me a message and any moderator reading this please let me know if I can post a link from Geekbuying blog.