I've just got my windows 7 re installed on my PC, but now when i plug in my hdmi cable my sound comes through the output on my motherboard, instead of through the hdmi cable, I've tried to change the hdmi output as the default output but i cant because it says its not plugged in, it has worked before now. It might have something to do with the Realtek HD Audio Manager but i'm not sure, thanks for any help! Also when i go onto CCC to change my audio settings, it says my displays do not support audio output, but i know they do because i used the speakers built in to my monitor prior to the re installation