See Post #1/I. No Sound/3. Front Panel Post to HDMI Audio AppleHDA, off topic. Audio ID: 3 is for HD3000/HD4000 HDMI audio only (6 and 7 Series motherboards) ALC1220 does not support Audio ID: 3, result: no devices. Use Audio ID: 1 for your motherboard. The script says Nvidia HDMI audio is enabled, no action required. HDMI audio is off topic.