Macbook Mid 2012 certain keys unresponsive: Left Shift Key g key types copyright symbol p key engages mute for volume

MNelson3 wrote:

I replaced my battery, then several keys on the keyboard became unresponsive. After googling this, I found someone here with the exact same problem. I'd like to follow up to see how they resolved the issue.

Left Shift Key is not working

'g" key types copyright symbol

'p' key engages mute for volume

Right Shift key works as expected

First thing to check—

verify Full Keyboard Access did not get turned on...

ref: Navigate your Mac using Full Keyboard Access - Apple Support