Check whether your keyboard has an Fn Lock key or a lock icon on the Esc, Caps, or Fn key
Press Fn + Esc
Press Fn + Caps Lock
Press Fn + Num Lock
Press Fn + Shift
Press Fn + Ctrl
Use your laptop’s BIOS or UEFI settings to change the function key behavior
Look for settings such as Action Keys Mode, Function Key Behavior, Hotkey Mode, or Fn Lock
Save changes and restart the device
Use your laptop manufacturer’s keyboard utility if available
Check the user manual for the exact Fn Lock shortcut for your model