Lost some keys on keyboard not working

roag wrote:

UIJKLM Keys not working on Mac M3 switched on just to find all above keys not working

if you suspect you have a keyboard issue:

>System Settings > Accessibility > Pointer Control and make sure it is turned off

Verify Mouse Keys feature hasn't been turned on by mistake in your >Accessibility Settings.

(It can be turned on/off by hitting the option key 5 times)

verify Full Keyboard Access did not get turned on

>System Settings>Accessibility >Keyboard>Full Keyboard Access>OFF

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

Navigate your Mac using Full Keyboard Access - Apple Support

A SafeBoot Use safe mode on your Mac - Apple Support will sort many anomalies

Those are keys in the same two (slightly diagonal) columns. That generally means a failure in the keyboard itself. these are generally not repairable, and would require keyboard replacement, which is expensive.

There is one possible complicating factor -- those are some of the keys typically assigned for "numeric keypad on the alphabetic keys", a popular add-on not supported DIRECTLY by MacOS, but possibly attempted (with varying levels of success) by any one of MANY third-party software packages you may have added.

So your added software (if so equipped) may be screwing up.

roag wrote:

UIJKLM Keys not working on Mac M3 switched on just to find all above keys not working

How about 789? This might help

Fix for 789uiojkl keys or numeric keypad … - Apple Community