I thought I posted ths yeaterday, but I must have done it incorrectly. I have the Pavilion dv7-4061nr, with Windows 7. Yesterday, the sounds from the room started coming through the computer, as if I were speaking into a microphone. I do not have an external mic attached. If I speak, I can hear my voice as if in an echo chamber. There is a hissing sound, and some times loud undulating sounds, similar to feedback through an amplifier. Any help would be appreciated.
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