So I just built my computer tonight, everything seems to have started up pretty well except I cant get any sound out of the HDMI. I have an Asus F2A55-M LE motherboard that has the Realtek ALC887 audio chipset and am running Windows 7 64 bit. Ive downloaded the most up to date drivers from the Asus site, but when I go into sound devices windows says HDMI not plugged in, and the only realtek drivers there are for the optical audio. Any ideas what I am missing?