Sound Monitor Compaq FP 7317

Question

My Compaq FP 7317 has no sound. On the Sounds and Audio Devises Properties Volume "No Sound Device" is highlighted. At the bottom of that under Speaker Settings (use the setting below to change indivual speaker volume and other settings) the box Speaker Volume, Advance and Apply are not in Bold type, therefore when I click on them they will not open. Mute or Place volume Icon in the task bar are not checked. Please help.