Sound isn't working

Hello,
i have an hp a6419fh with realtek audio. the sound is responding (aka the little bars are going up and down when i play music as if there is a connection) but there just isn't any sound coming out of the computer. I've done all the control panel work possible, updated realtek, drivers, etc...still no sound. plugged in headphones, still nothing. any help would be great golly!