My mom is cursed when it comes to electronics. It's just one problem after another, honestly. Today's problem is that she booted up earlier, and the keyboard was wigging out; all caps despite capslock not being on, and any link she clicked opened in a new browser window, both of which said to me that the computer thought some key was being held down when it wasn't. She said she restarted, and that was no longer happening, but that a different problem had occurred, which is where we are now. The two central columns of keys (6yhn and 7ujm) are not working.
I've restarted her laptop several times. I've run sfc and chkdsk; sfc found some corrupted files and fixed them, but that didn't fix the problem. I also opened the laptop up and dusted and made sure all cables were seated properly, still no change. There's been no water near it, not even a drop, but the cat does often walk across the keyboard. I checked settings in Ease of Access after a Google search, to make sure Filter Keys was turned off (it was). So now I'm at a loss, what else could be causing it + what other diagnostics can I run?