I have a onboard audio RealTek Ac97 Audio with latest drivers.

When I plug the sound in I only get sound off of one speaker. I checked my audio settings and everything is set correctly (meaning the equalizer is not moved to the left to play only one speaker)

The speaker system is good because I tested it on another machine and it works correctly. both of them

Any ideas?
thanks for the help

Well I found a tempory idea.
I pluged the audio cable into the front output of the computer (for like headphones) and both do work..

so I'm figuring its a harware problem with the plug in on the back of the computer

Sounds like problems i used to have with my cd-player years ago i found when i turned the end of the headphones(where it plugs in) a certian way that it would work right again. but could be a problem with the jack

some computers need jumpers set on the motherboard to tell the computer to use rear audio sockets or front audio sockets, is it that the jumpers are not configured correctly