Locate the Fn key on your laptop keyboard
Press the desired function key directly to use its default action
Hold the Fn key and press a function key to use the alternate action
Check your laptop settings to change Fn key behavior if needed
Use the BIOS or UEFI settings to enable or disable Fn lock on some laptops
Press the Fn Lock key or use the key combination for Fn lock if your laptop supports it
Refer to your laptop manual for model-specific function key shortcuts