Keyboard working temporarily and inconsistently

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I’m using Windows 10 Home, version 20H2, build 19042.685.

Okay, this is a pretty long story. I’ve had my computer (an Alienware) for a few years with minimal issues, but one day the keyboard stopped working. Moving the keyboard from one USB port to another sometimes got it working for a few minutes and sometimes did nothing at all.

(So far as I can tell, every USB device I have other than a keyboard works fine regardless of which USB port it’s plugged into.)

I tried updating the drivers…

Keyboard working temporarily and inconsistently

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