CactusLander,
Welcome to the HP Forum!
Assuming your Audio setup is typical for Windows 7 or 8, and that (in general) your PC sound is in working order,
then the next place to look is in Skype.
Take a look at the following for "how to":
How do I adjust the sound settings on my computer and in Skype for Windows 7?
Start at the top and work down to and including the Section:
Checking your audio settings in Skype
