One day, the external speakers on my dm4 3050us simply stopped working. The headphones still work. I've replaced the mobo and the audio/usb board to no effect. Replaced the chipset drivers and the audio drivers. The problem persists. Audio passes with flying colors running UEFI diagnostics on the speakers. All I can conclude is there's a driver conflict somewhere. Short of going back to a clean install, I'm stumped. Any help MUCH appreciated.
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