Inspirion 530 Stopped All Audio Except Bleeps

About a month ago my Inspirion 530 stopped giving all audio from YouTube and other sites and from even my CD's. I admit I just started using these activities in earnest about 9 months ago and my PC is only 4 years old.

 

Keebellah, my sound is back. Thank you very much. I did not find a "card sound setting" in my control panel. But as I started to try by opening Control Panel as you suggested--I clicked on "Change default settings for media or devices," which is under "Auto Play"--clicked on "Reset all Defaults"--opened Media Center and put in a CD, which played right away--I then went to a YouTube link--clicked on it and it did not play, so I glanced at the volume level in YouTube's window and turned it up--Plays perfectly. I am going to donate $25 right now to this site. I will now try to find my sound card settings for the future, but won’t change a thing. I would have been a PC guy now if they had been around when I was growing up.

Paul