

Open your HP BIOS and go to the Advanced Settings tap.

On some HP laptops, you can go to the BIOS and change this setting. Of course, the only way to tell which state it’s in is to wait and see if the light turns off.

When you tap it, it toggles through its three states. You can toggle the state via the keyboard light button. The backlit keyboard on an HP laptop works in three states off, time-out, and always on. If you have a Dell laptop, you even control the time-out duration. On both Dell and HP laptops, you can set your backlit keyboard to always on. If the manufacturer doesn’t have an option to set the backlit keyboard to always on, you are out of luck. It’s up to the device manufacturer to provide it. Windows doesn’t have a built-in option to control the backlit keyboard on a laptop. This has its limitations foremost of which is the make of your laptop. If you find the timeout counterproductive, you can set your backlit keyboard to always on. To turn the light on again, you have to tap any key or tap your touchpad.

Simply put, the Fn key used with the F keys across the top of the keyboard, provides short cuts to performing actions, such as controlling the brightness of the screen, turning Bluetooth on/off, turning WI-Fi on/off.The light times out usually after 5-10 seconds if you don’t use your keyboard or touchpad.
