Usb's not working

Hi all, just updated my drivers last night on giga 800hd se withteam red and now no usb's working. Any idea's ?

It's original, the usb's worked perfectly since i got it, only since driver update 16.1.2012 they have stopped. Any way to uninstall back to earlier driver? Thanks

Hi all
Have fixed problem
Done a flash of new 17.02.2012 image and all back working
Thanks