Usb ports has power but not working

Hi I have a Windows 7 Ultimate and all of a sudden all of my USB ports stop working

None of my USB devices work but still get power from the USB ports

I checked my bios as well and it says my usb ports are still enabled

i went to Device manager and deleted the drivers under the Universal serial bus controllers, restarted my pc and still no change, then i right clicked on Universal serial bus controllers and scanned for hardware changes, then it said device driver was not successfully installed. HELP PLEASE

Thanks
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More about ports power working
  1. Insert your USB drive and then goto device manager check if shows the devices if not then try using check for change in hardware option of Device manager
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