I formated my laptop aspire 4220 acer AMD processor 3600+, theres 3 uninstalled devices. coprocessor,SM bus controller and unknown device. My friend cant able to hear my voice as i talk in yahoo mesenger computer call. Please help me to identify that unknown device and please send me drivers for three remaining uninstall devices. Thank you so much. More power. Juliette D. Serrano.
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