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While looking at pictures on my laptop, removing & plugging in flash drives, the usb ports stopped working. In device manager the ports are working until you plug a usb device in, then it states that the device is not recognized or unknown device. All controllers were uninstalled & reinstall, bios was updated (however in bios setup there isn't a usb enabled tab, to turn off or on) I even reinstalled windows xp but that didn't help. Can anybody help?

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Last Post by SillyBilly
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Well, I am going to say just a guess, since you installed everything new again, we can rule out virus attack. Next, it sounds to me like a voltage problem, the ports work when at idle, but as soon as you plug a drain source on them, they quit. I would try to see if there is voltage settings in bios, if you have the usb expansion card, try unplugging it, and use the front usb or in the back by the mouse and keyboard ports. I don't know much about the voltage end because I do not know your board, but hey, its worth a look. Be sure to have updated drivers for your usb, if your using XP, then it will do it automatically. Hope I helped out some.:)

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