After looking into this a bit I saw that this solution was able to help many others with your same problem.
Shut down your computer completely, unplug the power cord from the back for at least a minute (this drains the power from everything). Then power back up. For many people all of their USB ports were flaking out, first one, then another, then the whole USB hub was gone. This little trick should have them all back up and running perfectly.
I hope this helps!
Windows Outreach Team