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Solução possível do link:
I was able to resolve my issue. I started the computer and when Windows started to load, I interrupted power (did not shut off the computer using the start button, but physically unplugged it). If you are working with a laptop, you may have to pull the battery first. Then I did it a second time. After the second time, Windows booted in recovery mode. From there, I was able to do a system restore. Now my mouse and keyboard are working again. However, I'm afraid of what Windows 10 is going to do next... I have already had a number of issues with Windows 10 malfunctioning and am very frustrated by its fragility. I'm crossing my fingers.
Como você mencionou que o teclado funciona na BIOS, não deve haver falha de hardware com o teclado ou a porta USB
EDIT: Se você tiver outro teclado e / ou mouse, eu tentaria usar isso também.