I'm having a problem with my sound.  My speakers work but there are no sounds from computer.  I have windows xp and at one point there was a yellow circle with an exclamation mark in it on the SoundMax integrated  digital audio.  I went into trouble shooting and that seemed to fix the problem atleast the yellow circle is gone and it says its operating but when i go into device manager it says no audio device.  Thanks for your help in advance.