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February 7th, 2020 09:00

Use a diff keyboard such as a usb KB. The KB is separate from the AIO and you can use any keyboard. If you have on screen KB try un-muting there. Turn the KB over and see if anything falls out--like crumbs or dust. 

February 25th, 2020 04:00

Hi Mary,

Thanks for your suggestion, but, the problem disappeared by itself the moment I got a new update from Dell, I believe they have fixed it after reading my message.

Marcus Fontoura

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