I'm attempting to help my daughter fix her USB issue, so the information I have about the computer is minimal at this point. The computer is and HP Pavilion a6710t Desktop PC. It has a Foxconn motherboard. Here's the story, She's been using this computer for a couple of years, was running Window Vista. One day her wireless mouse and keyboard quit working. I gave her a usb mouse to try to no avail. The message when we plug any USB device that previously worked on her computer is 'Unknown sub device, device descriptor request failed'. After doing much research online and attempting a multitude of fixes from online sources I had the bright idea (being the computer genius that I am (NOT!)) to update her Operating system to either Windows 7 or Windows 8. She chose Windows 8. Here I'm thinking if I wipe the hard drive, do a clean install of Windows 8, the problem would be fixed. Boy was I wrong, still no USB ports are working. Makes no sense to me unless it's the hardware itself. Any suggestions? Ideas?