This button may even be labeled with a backlight icon. If your HP notebook computer has a backlit keyboard, take a look at the top bar of your keyboard and locate the F5 button. Let’s break down how to make your PC work for you, delving into how to turn on your keyboard light, how to turn off your keyboard light, and the fixes to some troubleshooting errors you may run into with your HP laptop. When the sun goes down and you’ve still got hours of work to go, you’ll want to know how to turn on keyboard lighting so you can soldier on through the night. So, you’ve got a new computer and you’re not quite used to the many shortcuts that allow you to change certain settings with the simple click of a button. The vast majority of modern laptop computers come with backlit keyboards in addition to boasting a number of other fancy features that may distract from this rather basic, but wholly necessary feature. Laptop keyboard lighting has changed the computing game and has made space for nighttime users to power on through the darkness.