I am totally confused. We have 2 computers that the usb ports are not working. The ports show up in device manager, I have removed them in safe mode and during reboot they reinstalled. However, when plugging in a device, natta, nothing. Both computers are ASUS MB's, prc800 deluxe with a raid array and a p4r 800-mx. I'm thinking both computers quit working after SP2 update. I even tried rolling back the usb drivers to an earlier date. The BIOS is set properly and updated to the most current version. Installed a usb card which installed normally and works. I can't imagine this being an issue with the board since the drivers reinstall after they have been removed. I also unplugged all addon usb's from the board and just left the 4 or 6 on board ports.
Thanks for any help..