I know it sucks. I have a problem with touchscreen not working in windows 10 1607 update. Is your touch screen working at all? could you please send me some drivers o fix touchscreen?
For your issue, You might try PiPo W8 download files and the file you’re looking for is there and the drivers from W8 fixed my Bluetooth and sound except touchscreen not sure what file I need.
I have attached the file, you need to copy it to Windows/INF/ and reboot.