Press Fn + Esc
Press Fn + Caps Lock
Press Fn + Shift + Esc
Press the Fn Lock key if your keyboard has one
Enter BIOS/UEFI settings
Find Action Keys Mode, Hotkey Mode, or Function Key Behavior
Disable Fn Lock or set function keys as default
Save changes and restart
Check your laptop manufacturer’s keyboard settings app
Update or reinstall the keyboard driver
Use the keyboard utility software if your device includes one