Question about Dell Latitude E6400 Notebook

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I have a dell E6400 laptop and something has happened to the usb ports everytime I plug in an usb thumb drive or anthing else it says if you use a 2.0 pots it will perform faster. The ports are alread an 2.0 port and worked good till a week ago.

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  • Ken Potterton Mar 14, 2011

    I use a lot of wireless connections and need a 2.0 usb port to download
    screnns on a maple interface.
    I tried another E6400 and it worked fine and the messages never came up and the screens loaded fine. So what do I do now.



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I believe it's a benign message, as long as the USB devices still work.

With my Dell Inspiron, I would periodically get those messages and then the message would simply go away. I couldn't find anything wrong.

So, if the USB devices work OK, do not be concerned.

If the USB devices do not work, and you recently updated your operating system, roll back your operating system with System Restore. Go to System Restore and choose a date when your system worked OK. Note: with System Restore, all your updates will roll back to that date.

To access System Restore in Windows 7: Open the Start Menu. Click on All Programs, Accessories, System Tools, and System Restore

Hope this helps.

Posted on Mar 14, 2011

  • 2 more comments 
  • NinaE Mar 14, 2011

    So, none of your USB
    devices work ?

    If you recently updated your operating system, try System Restore.

    You may have spyware or malware which could have affected your system. System Restore would handle. See my notes on System Restore.

  • NinaE Mar 14, 2011

    Another thought is that there could be a corrupt setting for your USB devices. If you reinstall the drivers for your Enhanced USB controller, that should resolve it.

    (more to follow)

  • NinaE Mar 14, 2011

    First, unplug any USB devices from your computer with the exception of your keyboard and mouse, if they are connected. Then, go to your Device Manager page by doing:
    Start - Control Panel - System - go to Hardware tab - Device Manager

    (more to follow)

  • NinaE Mar 14, 2011

    Look for the Universal Serial Bus controllers. Select the Plus sign.

    Simply identify the item which references a "USB Enhanced" controller and right click. From the options provided from your right click select "uninstall." Click OK. Reboot your computer.

    Sorry for the pieces - system problems.



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