Hello, I got this problem 2 day ago - "usb device not recognized". My usb ports suddenly stopped to work. I thought that it might be worn out but even the ports which i didnt used before gave the same message . I tried reistalling the usb-root-hubs but it didnt help. I reinstalled the drivers from the cd but again nothing . Switched off the pc and plugged the cable out and wait some mins -nothing. When the pc is not working my mouse has the red light under but when i turn it on it is off. Are my usb ports dead or is there sth that i can do? P.S. Sorry for my english.