custom LogonUI.exe, no sound

I'm using a custom LogonUI.exe, it's basically an AHK script with commands to run Kodi Media Center, it's converted to an exe file that I've changed from the original LogonUI.exe. Everything works perfectly, the computer boots straight into Kodi without the login screen. The only problem is that I have no sound, please if anyone knows where the problem could be. I use this for home and everything else. I'm assuming it should be something like a console experience.