Posted January 22, 2011
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The sound could be due to a failing sound chipset or card inside the case, or failing speakers. Have you tried plugging mini laptop external speakers into the laptop's headphone jack to see if the speakers are the problem?
I haven't tried that with the sound but I don't think it's the speakers. When they don't work, there's a red X on the sound icon which tells me it's something on the inside, but also something to do with the hardware since a system restore didn't really do anything. I dunno man.