Do you remember when the KB lights were working until they weren't? Backtrack the best you can. Was there any changes in the BIOS made by you or recent BIOS updates applied prior to the KB lights no longer working? Or is it just from the ATK packaged drivers you only changed and that's when you noticed your KB lights not working using Fn + F3/F4 afterwards?
Please have a read
here and contact
jcd69 who is a Volter there and link him to this post. I recommend using this option as a last resort as ROG forum member Gps3dx should be able to assist you with this. Send him a PM first and await his reply.
