Speaker and earphones dont work

[Guest]

Hello, I have xp installed on my desktop. Speaker was working till I decided to plug it out and plug in the earphone. The earphone didnt work however when i plugged the speaker back in, it was not working any more. So I have no sound comin out at all. What can be the problem? I checked the hardware it looks ok, sound levels are all ok.

 

[hang-the-9]

Are you sure you have it plugged into the correct ports? Speakers are powere on? Are the multiple audio channels enabled?