Windows has no control over the actions associated to the function keys (F1 - F12) on your laptop, those actions are always controlled by the laptop manufacturer because the actions vary from laptop to laptop model.
If pressing the function key or Fn + the function key does not produce the correct action, boot your laptop into BIOS.
In BIOS search for a setting to toggle between Function Keys and Action/Media Keys to test if that resolves the problem.
If that does not resolve the problem, go to the support page for your laptop on the Asus website to download the ASUS System Control Interface driver and the ASUS Keyboard Hotkeys app if they exist on the support page for your laptop model