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USB not working


My USB quit working, partially. They all recognize a device is plugged in, but some won't work. Only my wireless mouse and keyboard work, but only in selected slots. It installed drivers for my Logitech webcam, but wont run. I have Ubuntu 12.04 Lts and Win 7 ultimate and does this on both O.S.'s. This just started happening. HP media center PC m7277c


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