I have a relatively modern laptop (Fujitsu Siemens D1840) that has been working fine for the past three years. PC has three USB1 ports, two on the left, one at the back. A few days ago, "something happened". For some reason, two of the ports packed up. They still detect devices on plug-in, but give an error message to the effect that "the device has malfunctioned and windows cannot recognise it". This is a typical Microsoft fib, as the devices (eg mice, headphones) all work just fine in the remaining USB port. I tried deleting all of the USB drivers/hub via hardware manager, but they just re-install with the same problem - one works, and two do not. Most new-to-this-pc devices, such as an unpowered USB hub, produce the same error message. Strangely, when I tried one particular new device - a powered docking station for a digital camera - this installed and worked ok in one of the damged ports, but not the other. Thinking that the two ports might simply have lost their power supply, I tried installing a powered USB hub. This produced the same error message. O.k. - is this a persistent driver problem, or some kind of hardware failure? Any ideas for a cure? Have searched MS and F-S support, but of course found zip about this type of situation.