Can you post up your sound card info, I need to know the model of the Realtek device, I know it's Realtek high definition audio device but I need to know if it's alc888 or above, you can download this file from realteks taiwan website(slow connection I know)
http://www.realtek.com.tw/downloads/...&GetDown=false
Just to clarify, you said that your audio
driver was up to date, but that's windows driver model version which Microsoft make for general compatability, they will not give you full functionality and management of your codecs