Hi I have an Asus N550J Laptop with a weird HDMI sound output issue. If I have the laptop loaded and connect my Samsung LED via HDMI the picture starts straight away but it does not have sound. No HDMI sound appears under the Sound Control Panel or in Device Manager. However, if I reboot the laptop with the HDMI lead connected, it boots with the sound working. The Intel Display Audio device appears in the task manager and in the Sound Control Panel. Everything works great. Unplug it and plug it back in again you are back to the same problem and have to reboot.

I have the latest drivers for Intel and have reinstalled the device.

If anyone has any help I would be grateful.