Spacebar, Alt, Ctrl keys not working

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Devesh Bhardwaj1

Hey, I've been using my laptop for about a year now and suddenly spacebar, alt and ctrl keys have stopped working.This happened 3 days ago, I have read a lot of threads and all of them have almost same solutions and none worked yet.To clarify things, I have tried uninstalling keyboard driver and installed it, it should be up to date.Sticky keys is NOT on.I can use these keys when I connect an external keyboard AND I can also use these keys on ON screen keyboard.I have tried troubleshooting and it showed there's no problem.Help.

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