I have had my Pavillion DV6 1230us laptop now for about 7 years now and it was working great untill last year. When the lap top comes out of sleep mode or I restart the computer the " unkown device" balloon pops up. I have tried the following fixes, un-installing all the usb devices and did a reboot, I removed the main battery and held the power button for 2 minutes and re-installed it , I have re-installed the webcam drivers from HP and even removed and installed the small mother board battery with no sucess. When the " unknown device " balloon pops up I can hear an audio prompt like I am plugging and un-plugging a usb device in one of the ports but I am just watching and hearing the problem happening.
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