Family Life How do I get my backlight to work on my laptop? How do I get my backlight to work on my laptop? Also, depending on your computer model, your PC may be configured to control the backlit keyboard via the F9 or F11 button rather than the F5 button. Practice the same simultaneous Fn + F11 operation to turn on a backlight keyboard light.27 jun 2019 Related Posts:Why is my keyboard not lighting up?What is a USB mouse and keyboard?What is the point of a MIDI keyboard?How do I add a backlight to a photo?