Check your keyboard for an Fn Lock key or Fn + Esc shortcut
Press Fn + Esc to toggle Fn Lock
Try Fn + Caps Lock, Fn + Num Lock, or Fn + Shift if your keyboard uses a different shortcut
Enter BIOS or UEFI settings during startup
Look for Action Keys Mode, Function Key Behavior, or Hotkey Mode
Set the function keys to standard F1–F12 behavior
Save changes and restart the computer
Use your laptop manufacturer’s keyboard utility if available
Update or reinstall the keyboard driver if the setting is not available
Consult your laptop model’s manual for the exact Fn disable method