Chosen Solution
Num keys 1-9 are not working on the built in keyboard on my MacBook pro 13" mid 2012. I have confirmed that it is not a software issue.
Generally you have to replace the keyboard or entire uppercase. Here’s how to do the keyboard: MacBook Pro 13" Unibody Mid 2010 Keyboard Replacement Here’s the parts: https://www.amazon.com/Macpart-Apple-Mac…