Press the keyboard backlight key, usually F5, F6, F7, F9, or F10
Hold the Fn key and press the backlight key if needed
Use the keyboard shortcut for your laptop model
Open the keyboard settings in your system settings
Turn on keyboard backlight or keyboard illumination
Adjust the brightness level if available
Check the BIOS or UEFI settings if the backlight option is missing
Update the keyboard or chipset drivers
Restart the device after changing settings
Refer to your laptop manufacturer’s support page for the exact shortcut