Computer boot standard enhanced PCI to USB Host Controller exclamation

Driver Standard enhanced PCI to USB host Controller each boot has a yellow exclamation point, USB interface is not available, each time you have to manually uninstall the Device Manager Standard enhanced PCI to USB host Co Ntroller, and then the scan is installed properly. But no matter how. Shut down and reboot again ...
Solution:
Win key +r into the run, enter regedit, open the system registry. Expand the following registry key in turn:

HKEY_LOCAL_MACHINE/SYSTEM/CURRENTCONTROLSET/CONTROL/CLASS/{36FC9E60-C465-11CF-8056-444553540000} (Applies to Windows 7 system) or

hkey_local_machine/system/currentcontrolset/control/class/(for Windows XP system), find "UpperFilter" or "LowerFilter" in the right window Item and delete it.

and uninstall the "Universal Serial Bus Controller" with an exclamation point device in the backup manager. The scan detects hardware changes operation.
Finally reboot.