I had to repair my XP Pro /SP2 (via installation CD) and most things looks fine but the USB ports. Any device I slip into the ports are not detected by Windows Explorer. Interesting thing is that Device Manager do see the devices and states it's working properly. It's also worth to mention that wireless KB and mouse keeps working as always (an both are connected to USB ports).

Does anyone out there have an idea about what is happening / could share some thoughts about how to fix this issue?

Many thanks folks.

Luciano