Remap laptop brightness keys to Fn + Arrow keys

My new Dell laptop uses Fn+F4 and Fn+F5 to adjust the brightness of the display. How can I remap this to the Fn+Up and Fn+Down key combinations that I'm used to?

Solution 1:

Unfortunately, keys cannot be remapped through software. Only hope would be if BIOS allows for remapping of keys but usually that is limited just to and switch.

I am not aware of BIOS that allows for other key combinations to be remapped.

Solution 2:

This is impossible unless you change the hardware of your keyboard, the Fn key isn't seen my any software. When you press such a key together with another a special keycode is sent to your computer, pressing Fn alone does nothing.

But what you can do is to look for a AutoHotkey script which allows you to do this, ask on their forum. ;-)