New
#51
Solved:
I searched the web endlessly for answers and solutions, i tried all and none worked.
I took a change and sent my clients motherboard back to the supplier (as it was 6 months old and still under warranty - MSI G31 - ) and told them the USB ports are malfuntioning. With out them testing the board they replaced it with a new one.
I placed the board in the box (didn't need to update or install any drivers because it was the same chipset as the previous motherboard) and whala... all the USB ports worked again.
Replace your motherboard if problem presists.