Mac Keyboard Not Working? Here's How to Fix It

Troubleshooting a Non-Responsive Mac Keyboard: A Comprehensive Guide

A malfunctioning Mac keyboard renders your Mac practically unusable. This guide offers solutions for common keyboard issues, particularly helpful for MacBook users who can't easily replace the keyboard.

1. Keyboard Cleaning:

Dust and debris can hinder key functionality. This is especially true if you frequently eat or drink while using your Mac.

1. Hold your keyboard (or MacBook) vertically at a 75º angle.
2. Using compressed air, spray from left to right, targeting the affected keys.
3. Rotate and repeat the process on both sides.

2. macOS Update:

Software glitches can sometimes cause keyboard malfunctions. Updating your operating system might resolve the issue.

1. Access System Preferences.
2. Select Software Update.
3. Install any available updates.

3. Preference File Deletion:

macOS stores settings in .plist files. Deleting and resetting these files can often fix various problems. Back up your Mac with Time Machine beforehand.

1. In Finder, press Cmd Shift G.
2. Enter ~/Library/Preferences/ and click Go.
3. Delete com.apple.keyboardtype.plist.
4. Restart your Mac.

Note: Deleting this file can resolve other issues, including mouse problems. macOS will recreate it automatically.

4. Removing Recently Installed Apps:

A recently installed application might be interfering with your keyboard. Remove any recently added apps to see if that solves the problem.

1. Open Finder and navigate to the Applications folder.
2. Sort by Date Added to identify recently installed applications.

5. SMC Reset:

The System Management Controller (SMC) controls low-level functions, including keyboard operation. Resetting it can be beneficial. The process differs depending on your Mac model (Intel, M1, iMac, MacBook, T2 Security Chip). Consult Apple's official support documentation for specific instructions for your Mac.

6. Test with Another Keyboard:

Connecting an external keyboard helps determine if the problem lies with the keyboard itself or your Mac's software. This is especially useful for MacBooks. Note that replacing a MacBook keyboard can be complex.

7. Check USB Connections:

For USB keyboards, try unplugging and replugging the keyboard. Test the USB port with another device (e.g., your mouse).

8. Battery Check (Wireless Keyboards):

Replace or charge the batteries in your wireless keyboard. Try different charging cables and USB ports.

9. Bluetooth Troubleshooting (Bluetooth Keyboards):

Remove and re-pair your Bluetooth keyboard.

1. In System Preferences, select Bluetooth.
2. Ensure Bluetooth is enabled.
3. Remove your keyboard from the Devices list.
4. Re-pair your keyboard.

10. Wireless Dongle Check:

If using a wireless dongle, try a different USB port or test it on another computer.

11. Keyboard Replacement:

If all else fails, your keyboard may be irreparably damaged (e.g., liquid damage). Testing your keyboard on another computer and vice-versa can help pinpoint the faulty component.

FAQ:

• Why are some keys not working? Possible causes include damage, dirt, or enabled options/apps altering key functions (e.g., Num Lock).

• How to make an Apple wireless keyboard discoverable? Connect it via Lightning to USB, ensure the power switch is on, and check Bluetooth in System Preferences.

• Keyboard backlight not working? While LED damage is possible, check your settings, reset the SMC, and remove relevant .plist files.

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