Launch hangs after running EFI Studio

[yellowjacket]

Everything was running fine on my system until last night when I wanted to try and get built-in audio working even though I have an external sound card that works just fine. Initially, I had to run EFI Studio in order to get my graphics working and again, that worked just fine. So I ran EFI Studio again and added AZAL and Ethernet devices... clicked on Write to com.apple.Boot.plist... rebooted the computer and it started hanging up at the white Apple screen.

 

I've done a variety of things to try and resolve this. Mounted the my external drive (that the hackintosh is running on) to my Macbook Pro and tried to edit the Boot.plist back to how it originally was without any edits. Repaired permissions about a dozen times now. Tried reinstalling Chameleon. Not sure what other things to try.

 

Is there a way to undo what I did with EFI Studio to get things working the way they were before?

 

System specs in signature. Thanks in advance for any help.