So I just finished building my computer which has a P8Z77-VPro Asus motherboard and an HAF 912 case. For some reason, the audio jacks on the front and back dont work. I plugged in the HD audio plug into the mobo and I have the latest driver of Realtek HD audio but when I plug in my Creative A220 speakers into the line out jack in the back, the speakers dont work even though they are on with the green light on located on the actual speakers. If i go into the sound manager on Windows 7 it shows that there is nothing even plugged in, like the speakers arent being recognized in any form. Also, when i try plugging in headphones in the front the same thing happens. The only audio I can get is from my monitor via the HDMI cord going to my GTX 670. Is there another driver I need to make the audio work?