We recently had a snobby customer service rep (slave) from ATT that complained about sound coming out the desktop rather than the plugged headphones. ATT doesn't allow 3rd party software but attacking IT. Instead of rebuilding the machine, I just installed Divx drivers and codecs. Sometimes corporations disable DVD playback......easy fix. Default mute is also your silent enemy.

That's why you stay away from proprietary equipment. The engineers figure they could discontinue the notebook at anytime...including those old drivers you are using.