Hotkeys are not working on Asus Laptop

I’m unable to use my function keys on Asus Laptop after cleaning up the registry and turning off some excessive services. I assume I turned off some wrong service and I am unable to use Fn keys.

In particular Fn+F3, Fn+F4, Fn+F7 and Fn+F9.

Other Shortcuts are operational (Fn+F1,2,5,6,8,10,11,12).
The Keys F3, F4… do work in applications but do not work with Fn.

What I tried to remedy this problem:

1. Reinstalled the official drivers and ASUS Hot Keys application;
2. Set the official driver on startup –
   I can’t complete this step for some reason.
   Once I reboot the task manager all the changes get wiped out.
   Checked if the drivers for my keyboard are installed via Device Manager. They were. I also connected and disconnected the keyboard just to see if it’s the case;
3. Used Windows Troubleshooter in system settings

Asus hotkey application –

Process that has to run in the background at startup but cannot be enabled –