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  1. #1
    New Lounger
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    2 USB ports work and 2 do not on HP Elitebook

    As usual, I disconnect the laptop from the external monitor and bring it into the den last night and when I plugged in a USB drive (many )to the 2 left ports, the laptop did not notice that I plugged anything in. The 2 right side ports work fine.

    Any ideas please

  2. #2
    5 Star Lounger
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    Insert something else in. Is it recognized?

    Does Device Manager show the two left ports?

    System Information > Components > Problem Devices. Anything?

    Also check your BIOS Menu. Some allow banks of USB ports to be shut off. I have no idea why it would spontaneously turn off a channel but it is worth checking. It is possible that bank is attached via a cable that disconnected. Sadly I suspect it has failed. And when one thing fails others are often close behind. I assume it is no longer under warranty?
    Last edited by Fascist Nation; 2016-02-26 at 21:39.

  3. #3
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    A mouse or keyboard is a good USB test device.

    cheers, Paul

  4. #4
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    Unfortunately there can be effects of not-felt static electricity when moving Notebooks around especially when on carpeting. When I run into that I shut fully down, pull the power cord then remove the battery for a short while. After putting things back I try again, usually works.

  5. The Following User Says Thank You to Berton For This Useful Post:

    Fascist Nation (2016-02-27)

  6. #5
    Super Moderator jwitalka's Avatar
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    Perhaps the "failing" USB ports don't supply enough power to support the USB drive. I'm assuming its a disk drive that is powered by the USB port. You can check the power capacity of your USB Hubs via properties in Device Manager. Click on the Power tab.

    Jerry

  7. #6
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    While you are in there, under the Power Management tab uncheck the box for Allow the computer to turn off this device to save power and you would need to do that for each Hub.

    In your Power plan/Change advanced power settings - expand USB settings - USB selective suspend settings and you can change for Battery and Plugged in to Disable - Apply.

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