Speakers stopped working

[HDT Commodore]

I unplugged the speakers at the rear of the desktop computer so I could see the line in properly to plug in the TV. I plugged in the TV, then the speakers. A popup came up for both to ask if the plug was right, blah, blah, blah. Opened Audacity, Line In worked, but the speakers wouldn't. Unplugged, re-plugged, restarted, everything, nothing. If I clicked the volume slider, the audio manager in control panel saw it, but no sound. Can someone please help?

 

[Infinital-NG]

OK.

So TV audio output going to Line-In on PC
PC Speakers plugged into speaker output on pc?

Correct?

Not in front of my Windows 7 machine, but on XP if you go to the windows sound controller on your system tray, go to Options, then properties, you need to change your mixer device to "Line In/Mic In"

I think.

Your wanting to hear your tv sound out of your pc speakers?

 

[HDT Commodore]

You are correct, but sound does not work at all, I don't expect to hear line in until I record it and play it back in audacity.

The computer simply has Leading Edge Computers badges. It is 3 or 4 years old and has an Intel Core Duo processor. The speakers are equal age Edifier USB speakers. (They connect to the green rear phone plug (speaker jack) plus USB to supply power.) I have a few cords connected to reach the next room where my television is. This is what I tried connecting from AV out (TV) to line in (PC). I have done this before with a cassette player.

We have McAfee Security. (This should have notified me if there was a problem, unless I missed it while under the desk.)


The speakers work on my laptop, and my headphones won't work on my laptop, so it's a computer problem.