At this point we don't know if the speakers or PC is faulty. Where and what else can be used to test the speakers?
Last Christmas I purchased a set of Altec Lansing 5.1 surround sound speakers
In the last couple of days, I noticed that my left front and left rear speakers are not working.
I have tried to unplug and replug everything, and I have checked the settings on my computer.
Neither of these fixed the problem, so now I ask, what is wrong with my speakers and how can I fix them?