Need a little computer help

Kevin there should be a button on your monitor for volume and an icon in the system tray in the lower right hand corner that you can click on to open the volume control, or you can also access it through the control panel.

I searched all over the entire monitor for a button but can't find one,any idea where it should or would be?
I've clicked on the volume control icon i have it all the way up and like i said it bounces when there should be sound but not getting anything out of the speakers.