Get a way to type now
- Connect the MacBook to its charger and try a known-working external keyboard.
- Using the trackpad, open System Settings → Accessibility → Keyboard and enable Accessibility Keyboard for on-screen input.
- Save open work before restarting. A built-in keyboard has no separate Bluetooth pairing; Bluetooth checks apply to an external wireless keyboard.
Check unintended input settings
- In Accessibility → Keyboard, check Slow Keys if a key works only after a longer hold.
- In Accessibility → Pointer Control, check Mouse Keys if some keys move the pointer instead of entering text.
- Check the Input menu for the intended language and variant. Use the layout guide if keys respond with different characters.
Compare built-in and external input
- Try the same keys in TextEdit and another app. Record whether the whole keyboard or particular positions fail.
- Compare an external keyboard on this Mac. If both behave the same way, continue with app and input settings; if only the built-in board is affected, record that distinction for service.
- If only Caps Lock seems delayed, hold it a little longer; Apple uses a delay to reduce accidental activation.
Debris, spills and service
For a key that feels different, follow the cleaning procedure for the exact MacBook model. Do not pry off scissor or butterfly key mechanisms.
After a spill, power down and disconnect the charger; do not keep testing. If input still fails after the setting and comparison checks, arrange Apple or authorized service with the model and affected-key details.