@ L8nitehackin

if you are sure HDEF is in your dsdt then please try the ff:

- copy the legacy kext in your extra extensions (could be the one from voyn1x of the 2 kext on the first post)
- launch terminal
- sudo -s then enter your password
- rm-r /System/Library/Caches/*
- chown -R root:wheel [drag your Extra/Extensions here]
- chmod -R 755 [drag your Extra/Extensions here]
- kextcache -v 1 -m [drag your Extra/Extensions but add .mkext in the end] [drag your Extra/Extensions] [drag your System/Library/Extensions] then press enter
- reboot

test if you have audio by choosing internal speaker on the output tab, if you still dont have audio then voodoohda it is