USB hardware not recognised warnings - when theres no USB devices

G

Guest

I have been using Vista for almost 8 months now and have never had any
problems until I turned on my PC earlier this evening and noticed that none
of the USB ports worked at all. Windows keeps showing me the "USB device not
recognised" warning dialogue box and is randomly playing the sounds it does
when you plug in and un-plug a USB device. Boggled, I have unplugged ALL my
USB devices, but the warnings still kept popping up and the sounds are still
being played like windows thinks something is in one of the ports. I am so
confused and have no idea what to do. The only thing that I can think my have
caused it is that was using 'ready boost' on a 2GB flash drive and
(forgetting I was using the flash drive for ready boost) removed it without
ejecting it. Is this the cause of my problem? Can anyone shed some light on
this? Many thanks.
 

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