Tried successfully and removed android without complete windows reinstall. All you need is a third party partition manager for windows. There are a lot of partitions in there, I only kept the SYSTEM, RECOVERY and of course WINDOWS partitions. The latter needs to be Moved first to the beginning of the unallocated space, and then resized to the maximum (maybe it can be done in one step, depends on your software). Now my WINDOWS partition is 57,46GB big.
A tricky point: The Windows partition resize needs to be done before boot, and it’s all done automatically by the disk software. However, when i clicked OK and the tablet rebooted, there was no indication it was on. It shut down (as in a normal reboot) but there was no sign it was turned on again. No boot logo, no screen backlight, nothing. 15 mins later it booted by itself into windows, and all partition actions had been completed.
Hope I helped 🙂
BTW, there are a lot of options in the tablet bios (accessible also without need of external keyboard, from the windows advanced restart options – boot to EFI). I wonder if there is anything worth tinkering in there.
