Chuwi Hi 10 Air Boot Failure WIndows 10 (v2004)

Since Windows Home 10 Upgrade (v2004) my Hi 10 Air tablet will not boot on its keyboard, but Windows goes to Blue recovery screen.If I take it off the keyboard and restart the pc it boots ok.

If I then shut down and reboot again (when not on the keyboard) it goes to blue recovery screen. Then if I put it back on the keyboard and restart the PC it boots OK? Very confusing… Can you please advise- Windows says latest Keyboard Drivers are best (???) but seems that the Chuwi system is not recognizing boot mode and switching appropriately?