Keynboard issue

As seen in the "title" of this message, when I press the "n" or" b" keys, nboth nb anbd nb appear as seenb here. How canb I fix this matter. It is very annoying.

Thank you for a prompt anbswer.

James

 

There is some sticky dirt between the keys: Try to clean it with something moist like microfiber cloth. Maybe even a mild soap helps. Nothing too wet.
Another thing is that there is a breadcrumb between them. Anyway the problem is probably the dirt