My back lit keyboard on my Asus G73sw quit working again. It has happened before and I was able to get it working, but I forgot how I did it. I am running Windows 7 64-bit. The keyboard lights do flash on start up so I know they are working. I have tried uninstalling my old ATK0100 driver version 10007 and reinstalling the latest version 23 I think *the whole ATK package). Still doesn't work. My screen brightness keys (fn F5 and F6 still work but I get nothing when I try fn F3 or 4. I seem to remember somewhere finding instructions on a registry key to delete but I cant find what I did with the how to on this. Anyone know what to do?