My laptop has 4 USB ports. Not a single one of them is working all of sudden. When I plug in a device such as a mouse, printer, memory stick etc., the device will light up, but the machine won't read the input. I uninstalled the drivers from the system menu and let XP reinstall them automatically. I also re-ran the Utilities disk that came with the machine. Nothing. This is pissing me off. I can use the laptop, but I have to use the touchpad. I cannot print anything or save anything to external sources. Anyone out there have any ideas??? Thanks in advance.