vibratone

I have a possible workaround to try and it worked. I am running Vista 32bit, but the problem sounds essentially the same. The workaround is simple. Disconnect all usb devices. Then you must disconnect power to your computer for around 10-30 seconds thereby erasing any volatile memory on the MB. Reconnect, now reboot. After I did this the usb devices were all recognized like normal. Here's some suggestions that did not work. Reformatting your HDD and reinstall OS. REinstalling USB controller drivers. Replacing the MB. Sending it off to be repaired. Putting in a new usb card. Doing all those trick with the registry. While I don't know the actual cause of the problem it seems it may be do to a conflict with the OS Device Manager and the hardware(USB controller). After you have it working, don't just yank out usb devices. Choose the remove hardware safely icon in system tray and actually stop the device before removing. This will likely prevent re-corrupting device drivers. Anyway, Hope it helps.