last week I had my notebook (an ASUS X54H) opened for some screen problems. Now the screen is correctly functioning but none of my USB connections is working. I've done some research on Internet, and try to operate on the Device Management and then the USB Controller, by trying to update drivers and then by uninstalling and re-installing them, but nothing is working. I've also tried the auto detect tools usually proposed by Intel, same story. Any help?
This is not a chipset problem. You need to contact ASUS support, or take your notebook to a repair center.