I recently had a computer of mine running on Windows XP looked at by a friend as it was running slow. Since having it back the USB ports dont work or power up any of my devices, but my device manager is telling me everything is ok. I cannot solve the problem using any of the troubleshoots and I can only assume that part of the USB port drivers have accidentaly been deleted or disturbed in some way? My question is do USB port drivers come as part of Windows XP? And will re-installing Windows XP solve the problem? Thanx, James.