I've just completed building my pc and everything is running ship shape but the only problem is that I'm getting no sound. I've yet to purchase actual computer monitors or speakers so I'm using my tv in my room for the time being connected with an HDMI cable that I know works. It supports sound just fine through my xbox and such but not through my pc and thought that my graphics card or motherboard supported sound? I'm new to computers so if anybody could offer any hints I would really appreciate it.