so i have a hp laptop and the speakers are not working.  I have checked and rechecked the settings and even did the online trouble shooting guide and they still do not work..  usally whe i mute the speakers they show 'mute' in the lower right corner, but the last time i muted them as i was shutting down and 'mute' apeared in the bottom center of the screen.  HELP  It's a HP pavilion running MS Media ed.