I built a custom tower a while back with a Asus M3N72-D motherboard and used both the built in video and audio chipsets it worked no problem, I recently purchased a new Nvidia Geforce 9800GTX+ 1gb made by Sparkle to upgrade my video capabilities for gaming, after I did a clean install installed the right drivers etc I go to play some music and I get no audio from my speakers or headphones so I checked the Realtek HD Audio Manager and it doesn't show that it is recognize any analog ports as being plugged in but the Digital audio port is shown as being plugged in which I am not using at all, I did make sure that I had the newest drivers installed, can anyone tell me what is going on?