
Audio device on high definition audio bus?
try removing this from device manager and restart, then check device manager again to see if it has reinstalled itself properly
http://answers.yahoo.com//question/index?qid=20070321101548AAzgpNv
What is a high definition audio codec?
A high definition audio codec is an audio format capable of playing back more channels at a higher quality than previous formats. The format is an advancement on how users interact with sound throu...
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http://www.answerbag.com/q_view/2215515
What is SigmaTel high-definition audio codec?
The SigmaTel high-definition audio codec is a driver that you can download to fix audio issues that occur following a soundcard or Windows update. Most versions of Microsoft Windows operating syste...
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http://www.answerbag.com/q_view/2203249
NVIDIA high definition audio not plugged in HELP!?
Unplug the cable for a few seconds and reconnect it.
http://answers.yahoo.com/question/index?qid=20130413113115AAtitPo
Do I need an optical cable for high-definition audio?
No. An optical cable simply allows for the transmission of high-definition audio at high transmission speeds, with no electromagnetic interference and at low transmission power losses. Conventional...
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http://www.answerbag.com/q_view/2159673