Use a Keyboard Shortcut

The key you use to activate your keyboard’s backlight depends on your device manufacturer. However, the most commonly used keys are F5, F9, and F11. If pressing these keys doesn’t light up your keyboard, press and hold down the Fn key and then press those keys.

There are manufacturer-specific keys that you can use to turn on your keyboard’s backlight. Here’s a list of some of those keys:

• Asus: Press the F7 or Fn+F7 keys. If that doesn’t work, try F4 or Fn+F4. On gaming models, use the Fn+Up Arrow key.
• HP: Press the F5 or Fn+F5 keys.
• Lenovo: Press the Fn+Spacebar.
• Dell: Press F10, Fn+F10, Fn+F6, Fn+F5, or Fn+Right Arrow keys.
• MSI: Use the dedicated backlit button on your keyboard or utilize the SteelSeries Engine or MSI Center software.
• Samsung: Press the Fn+F9 keys. If that doesn’t work, install the Samsung Settings app on your machine.

Use Windows Mobility Center

To activate your keyboard’s backlight using a graphical method, then use the Windows Mobility Center app. You can open it by pressing Windows+X and selecting the app on the list.

On the “Windows Mobility Center” window, in the “Keyboard Brightness” section, drag the slider to the right. This will activate your keyboard’s backlight.

If you don’t see the “Keyboard Brightness” section, your keyboard probably doesn’t support the feature. In this case, you can try your keyboard manufacturer’s app (if they have one) to see if that allows you to turn on the backlight.Make Your Mac Keyboard Light Up

On a supported Mac, you have three ways to activate your keyboard’s backlight.

Make Your Mac Keyboard Light UpOn a supported Mac, you have three ways to activate your keyboard’s backlight.

One way is to press the dedicated increase brightness key on your keyboard.

The other way is to access Control Center, select “Keyboard Brightness,” and drag the slider to the right.

If your Mac has a Touch Bar, then in the expanded Control Strip, press the increase brightness button to light up your keyboard.