How to Turn on Keyboard Backlit in a Dell Laptop? This combination will definitely charge through your laptop and activates the backlight on your HP laptop. Press the Function key(Fn) first and simultaneously press the F5 key to activate the key combination. Fn + F5 key – If pressing the F5 key alone doesn’t activate the backlight, try this key combination.Press the F5 key to turn on or turn off the backlight of your keyboard. It will be marked with three square boxes arranged in horizontal order. F5 key – Have you ever given a deep look at the F5 key in your HP Pavilion laptop.This method will guide you to turn on the keyboard backlight in an HP laptop with easy steps. In such conditions, the keyboard backlight feature will serve as a life-saving tool.Ĭhiefly, HP laptops have a peculiar key combination to light up the keyboard. Generally, a keyboard backlight is a must-have feature when you are traveling in darkness or attending a presentation in a dark environment. How to Turn on keyboard backlit on HP, Dell, and Lenovo laptops? How to Turn on Keyboard Backlit in an HP Laptop? If you are wondering how to turn on the backlight on your laptop, continue reading the article. Every laptop brand has its unique key combination to turn on the backlight.