The letter "b" isn't working for me in my Mac

Jose A Vivas Said:

"The letter 'b' isn't working for me in my Mac: Hello apple community! One of the keys on my keyboard are not working. The letter 'b' isn't working for me.(I had to copy+paste the letter.) Is there any solution? I restarted my computer and even followed to apple instructions in hopes that it would work. However, the key still doesn't work."

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Reset the SMC and the NVRAM:

Sometimes when changes are made to the system(i.e. updates), system configurations (i.e. for keyboard) become manipulated, technically. So, reset the SMC and NVRAM. To reset this, use an external keyboard, if an available option.

If your MacBook (2015 and later) or MacBook Pro (2016 and later) has an unresponsive key, or a key that feels different than the other keys when you press it, follow these steps to clean the keyboard with compressed air.

How to clean the keyboard of your MacBook or MacBook Pro - Apple Support

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what about G and R?

what about V and N?

if any trouble with those, they follow a row or column, and the issue is likely a problem in the physical keyboard, not in software.