Windows 10: One USB 3 port only works with ONE flash drive

  1.    06 Mar 2016 #1

    One USB 3 port only works with one brand of flash drive


    There is something very odd going on with JUST ONE of my USB 3 ports (one of the two on the front panel) on my new system that has a "clean" install of Win 10 Pro. A few days ago I tried to use that port and Windows did not recognize any USB drive that I inserted. There were no error messages and Device Manager was not complaining about anything (and did not "see" the drive). I was about to assume that this was a hardware problem and that something had gone wrong on the motherboard. (I believe - but I'm not positive - that this port was working fine when I first got the system...)

    As a final test, however, I tried booting the system from a Macrium Reflect "recovery" USB drive that I had made some time ago. [This was a Verbatim drive - see below.] Amazingly, I was able to "boot" perfectly from the supposedly-dead USB port! Then, after restarting the system with Windows 10, I inserted that same USB drive and it was recognized then also. BUT still no other USB drives are recognized. [Not quite correct - see below.] All other USB 3 & USB 2 ports work fine, so I assume the USB driver is fine.

    Would anyone have an idea what my be happening and/or how I might trace down this odd behavior?

    Thanks, Wayne

    UPDATE: I've just discovered that one type of flash drive always seems to work in the "problem" port! Specifically, all of the 8GB USB 3 Verbatim 8 GB Store 'n' Go flash drives that I've tried have worked perfectly in this port. (There doesn't seem to be anything special about this flash drive - it is a quite inexpensive model and is not overly fast.) No other devices - including many different USB 2 flash drives, a portable USB 3 hard drive, and a wireless mouse adapter - are even detected when plugged into that port. One USB flash drive that I tried includes a light which, when things are working correctly, comes on for a few seconds and then flickers when data is being transferred. On the "problem" port the light comes on and stays on permanently...
    Last edited by wbrells; 08 Mar 2016 at 16:48. Reason: More clues!
      My ComputerSystem Spec


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