Question : Problem: Right Speaker works, Left Speaker fails

I'm using Realtek AC'97 audio onboard with my mobo gigabyte p5s800-vm.

The sound is only coming out from the right speaker and not the left.
I changed speakers three times, still the same.

I checked the sound manager volume control, the control is centralised so by right, both sides should get sound.

I tried different songs, and I tested using the speaker test, right side is fine, but left side has no sound.

Any idea?

Answer : Problem: Right Speaker works, Left Speaker fails

I'll bet it's faulty jack. One of my computers (and a bunch of former MP3 players) only has one side of audio if the cable is plugged in properly. However, if you take the plug about halfway out and leave it in the right position, you get sound in both ears (don't think it's true stereo though).