Press the F5, F9, or F11 key to turn your HP laptop keyboard light on or off. Some HP laptops need the Fn key pressed with the light key to activate the keyboard light. If these keys don't work ...

Having the proper lighting on your Mac is essential for both your eyesight and its usage, especially if you're typing at night or in a place with dim lighting.

To turn on the keyboard light on your Mac computer, press the F6 key, or set it to turn on automatically. Here's how.

Using the backlight controls on the keyboard If you’re not looking to permanently turn off the backlight, then the obvious first place to go is the dedicated brightness keys on your Mac.