Unable to hear own voice via microphone, I can...

Question

I have a Toshiba Satellite M35X-S329 laptop computer. All of my volumes are on (nothing is muted). I have gone through all of the volume checks to see if there is something wrong, but nothing yet tells me why I am unable to hear my voice via microphone. I am trying to use my computer to make phone calls via SKYPE service. Can you help me. I also have a service contract on this computer through your store.