If your MacBook keyboard is not working, the right fix depends on whether the issue is software, liquid damage, or a hardware connection failure.
Quick checks
- Restart and test in Safe Mode
- Check if an external keyboard works
- If there was liquid, stop using it and power it off
Common hardware causes
- Liquid damage to keyboard/top case
- Keyboard flex/connector issues
- Trackpad/battery swelling affecting internals (some models)
If multiple input devices fail (keyboard + trackpad), it can also indicate board-level or connector issues—diagnosis helps avoid unnecessary replacement.