First identify whether no keys work, a few keys fail, or typing produces the wrong characters. Those are different symptoms, and replacing the keyboard is not the starting point for all of them.
For an external keyboard
Check its power and charge. For Bluetooth models, confirm Bluetooth is enabled and reconnect the keyboard. For a wired keyboard, check the connection and try another suitable port. A known-working external keyboard can also provide temporary input while a built-in keyboard issue is investigated.
For unexpected or delayed typing
- Check Accessibility → Keyboard for Slow Keys. When enabled, it requires a longer press before a key is accepted.
- Check whether Mouse Keys is enabled if keyboard input is controlling the pointer instead of typing normally.
- Check the selected input source or keyboard layout when characters differ from the key labels.
Menu wording varies by macOS version. Apple’s keyboard troubleshooting page links to the relevant settings. Save work and restart before deciding that an intermittent software symptom is a physical failure.
After damage or a spill
If liquid entered the computer, shut it down, disconnect power and seek service advice. A period of drying is not proof that internal damage has cleared. Do not force loose keys back into place or remove parts without the repair instructions for the exact model.
Before requesting a quote
List the failed keys, whether the fault occurs in more than one application, when it started, and whether an external keyboard works. Include the model and year; repair assemblies and available parts differ. Ask which parts, labor and diagnostic charges the quote covers rather than relying on a universal top-case price.
When to ask for help
Persistent failure of the built-in keyboard needs model-specific assessment, especially after impact or liquid exposure. For a business computer, record which task is interrupted and whether another device can keep that task running. Avoid sharing passwords or private customer files in an initial message.
For local help, see computer repair in Marion, Ohio or contact LC at (740) 223-5530. Describe the symptoms and ask whether the model and job fit LC’s service scope before arranging work.
Reference: Apple: when a Mac does not respond to key presses.
Reference: Apple: MacBook safety and service guidance.
Updated October 2, 2026. General troubleshooting guidance; the linked Apple documentation explains model-specific details.