usb not recognized?

umm...this may sound dumb.....but my computer is not currently recognizing usb devices.......its not in device manager....so i went to add new hardware.....but i don't know which one to choose from the list......i tried lookin on my mobo cd drivers.....but when i go to install usb drivers it says registry key error.....how do i get my usb to work?

nevermind i had to change the setting in the bios....geez im dumb.....well all is well....and nobody even viewed the post.,....lol