How to fix a keyboard backlight that doesn’t work on Windows and Mac

All MacBook Pro and Air laptops now come with a backlit keyboard that not only makes typing easier in low light but also looks very stylish. Since the backlight uses very low-power LEDs, it has little effect on battery life when the brightness is set at a reasonable or low level. This is why many people prefer to have a backlit keyboard at all times, even if the lighting situation doesn’t require it to be useful.

But sometimes, for no apparent reason, a backlit Mac laptop keyboard won’t work at all and even trying to manually control the backlight with the keyboard shortcuts tells you that the feature isn’t working or is disabled.

There are several possible reasons why the backlight may stop working on your MacBook Pro, MacBook, or MacBook Air, most of which offer simple solutions. If you find that the backlight on your MacBook Air or MacBook Pro keyboard is not working, follow these troubleshooting steps. In most cases, you can resolve the situation quickly and easily.

What causes the backlighting of Windows and Mac keyboards to fail?

What causes the backlighting of Windows and Mac keyboards to fail?

Backlit keyboards are keyboards with keys that are backlit by an LED. They provide better visibility and make typing easier, even in completely dark rooms. It’s now common to have a backlit keyboard on your laptop.

The backlit keyboard is controlled by software. There may be several reasons why it doesn’t work.
It may not work because of bad software updates or hardware issues.

What do I do if my keyboard backlight isn’t working on my Mac?

What do I do if my keyboard backlight isn't working on my Mac?

Verify the position of your light sensor

First of all, check if the light sensor is pointing directly at the light source.
In this case, the automatic backlight may not work.
Therefore, adjust the position of the ambient light sensor. Next, check to see if the problem with the Mac keyboard backlight not working has been fixed.

Adjusting the brightness of your keyboard

If you set the keyboard brightness to 0, you may also have a backlighting problem. Therefore, adjust the keyboard brightness by following these steps.

  1. Click the Apple icon in the upper left corner.
  2. Click System Preferences… from the drop-down menu.
  3. Select Keyboard from the choices offered.
  4. Uncheck “Adjust Keyboard Brightness in Low Light Conditions.”
  5. Use the F1 and F2 keys to manually control the keyboard brightness.
Modify the entire keyboard

If you spill liquid such as water, milk, or soup on the keyboard, the keyboard backlight may stop working. In this case, you will need to replace a new keyboard. You can replace it yourself or send it to a Mac repair service. It is highly recommended that you choose the latter option.

To replace the keyboard bezel, you must first purchase a suitable replacement part. Then prepare tools such as screws, knives, screwdrivers, and others. Then, turn off your Mac and remove the battery to replace the bezel.

Contact customer service

If all the above methods don’t solve the problem with your Mac’s backlit keyboard, it’s best to contact your Mac’s customer service and ask for a service.
This is a direct and effective way.

You are offered all the solutions to repair the keyboard backlight that does not work on Windows and Mac. Choose the methods according to your device.

What do I do if my keyboard backlight isn’t working on Windows?

What do I do if my keyboard backlight isn't working on Windows?

Restart your computer

In general, restarting your computer can solve many common problems. Turn off the computer and remove the battery. After a few seconds, replace the battery and restart the computer. Next, check to see if the problem with the keyboard backlight, which doesn’t work in Windows 10, has been resolved. If this method doesn’t work, try another one.

Modified software can be removed

Before the backlight stopped working, did you make any modifications to your software? If so, you need to uninstall the software and then check to see if the problem persists.

  1. Open Settings and go to Applications and Features.
  2. After clicking on the software you changed, select Uninstall, and follow the instructions on the screen to completely remove the changed software.
Update the BIOS and Chip Drivers

You can also try updating the BIOS and chip drivers to solve the problem. Drivers with different versions can cause these problems.

Changing Windows Keyboard Properties

Backlight delays can also prevent the keyboard backlight from working in Windows 10. In this case, you need to change the Windows keyboard properties.

  1. Center open items from the Search box, then go to Keyboard.
  2. Then change the backlight off time in the Keyboard Properties window.
  3. Click OK to save your changes and exit.
Reinstall the most recent Windows update

If the keyboard backlight problem is not working, it occurs after installing the latest Windows update.
It is recommended that you uninstall the update. You can also restore your computer to its previous state if you created a system restore point beforehand.

Most Frequently Asked Questions

If you can't manually adjust the keyboard brightness, it's probably because you're in a very bright environment and your Mac is set to adjust the brightness automatically. In this case, the backlit keyboard will turn off.

Turn the keyboard backlight on: Press the button to increase the keyboard brightness until it's bright enough for your needs. Use the function keys to adjust the keyboard backlight: Press F5 to decrease the keyboard backlight, or F6 to increase it.

Make sure you have the Keyboard Backlight option enabled in your BIOS. With the computer turned off, press the power button. Note: If the Keyboard Backlight option is not enabled, your computer does not have a backlit keyboard. Depending on the BIOS version on your computer, you may have other options.

If your laptop has a backlit keyboard, press the F5 or F4 (on some models) key on the keyboard to turn the backlight on or off. You may need to press the fn (function) key at the same time. If the backlight icon is not located on the F5 key, locate the backlit keyboard key in the function key row.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog,, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.