AMD Turion 64
Win XP Media center SP3
Any device plugged into any of the USB ports fails to be recognized. All USB devices return the error of: "USB device not recognized, One of the USB devices attached to this computer has malfunctioned, and windows does not recognize it."
More about :gateway mx6421 usb fails recognize device
Did that first. After a clean install of win. media center edition and fully updating the OS I got the number 1 usb port to work but the other 3 ports still gave the same response. I am now thinking BIOS update. If that fails I'll conclude it's most likely a hardware fault on the MB.