Got one for ya.
1. No audio devices appear (No Codec)
2. OSX Yosemite 10.10, GA-P67A-UD3, B6, Core i5 2500k, Radeon HD 6850
3. Used this guide, found no codecs in DCPIManager. Tried unplugging, reboot, etc.
4. Attached
5. Attached
6. N/A
7. Tried to filter "sound assertions" in...