Odd issue, as when I reset my Hi8 (different model, but still Chuwi and the same message) I was able to clear this using the vol up and down + power button to okay it. Can you try another USB keyboard maybe?
Chris | Admin
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Ordered and waiting for my: BMAX S15 & Teclast F6 Plus
Currently testing: LG G8X & Redmi K30
As suggested by another forum member, I tried again today by turning on the USB keyboard, connected USB keyboard, reboot, the the USB keyboard is now detected!
(The vol up and down + power still doesn’t work)
I cleared the TPM and now Windows 10 continues it’s installation.