I had the problem with my Cambio W101v2. I tried everything and finally fixed it in the following way. I wiped the disk clean and then installed the latest version of 32 bit Win 10. Then I installed the Intel driver package for the Atom Z3700 series processors. I then had 5 unknown devices in Device Manager. I manually updated the drivers with the driver package from RCA. One by one, I got the touchscreen, rotation sensor, and camera drivers installed. the cameras still didn’t work but installing the Intel Graphics drivers fixed that. The device now is running Win 10 version 21H1 with no issues.
The problem was not actually caused by a Windows 10 update. It was caused by optional Intel drivers offered by Windows Update. Do not install optional driver packages from Update and you should be fine.