I upgraded my dad's older computer to xp from 98se and now the USB ports don't work. If you plug anything into them, camara, memory stick, mouse, etc., the computer freezes up and you have to restart, even if you unplug the device that you plugged in. The computer is about 5 years old. PIII 667mhz. If you shut the computer down, hook up the device, and then turn on the computer, it works. If I remember correctly, that's the way 98se always worked. What do I need to change to make them work like normal, where you can plug devices in and take them out without turning off the computer. Thanks for your help.