none
USB has malfunctioned and exceeded the power limits of it's hub Port , you should disconnect the device RRS feed

  • Question

  • Hello, I just recently changed out my RAM,  at the completion of changing out my RAM , i started to get an error message of "  USB has malfunctioned and exceeded the power limits of it's hub Port ,  you should disconnect the device", I started troubleshoot by disconnecting the devices from all USB Ports one by one and monitored the message.  It continued to appear even after all of the USB connections had been removed.   I cannot get a real answer from people posting on the internet about this problem.  Some say it's in the power management, some say it's a hardware issue that the USB port has gone band and needs to be replaced(but which one),  the message doesn't make clear which USB is failing.  IS THERE A WAY TO FIND OUT WHICH PORT IS FAILING.  Why wouldn't Micro soft put in a process that would check to see which Some say just turn off the notification of the error and ignore the problem.  Any information on how to fix would be greatly appreciated.    
    Saturday, June 13, 2015 6:13 AM

Answers

  • Try uninstalling the USB root hubs. Open Device manager, click on the symbol next to Universal Bus Controllers, right click on USB root hub and click on uninstall, you will see more than one USB root hub, uninstall all of them. Once uninstalled restart your computer, so windows reinstalls the driver, and then plug in the USB device.


    S.Sengupta, Windows Experience MVP


    Sunday, June 14, 2015 12:16 AM

All replies

  • Try uninstalling the USB root hubs. Open Device manager, click on the symbol next to Universal Bus Controllers, right click on USB root hub and click on uninstall, you will see more than one USB root hub, uninstall all of them. Once uninstalled restart your computer, so windows reinstalls the driver, and then plug in the USB device.


    S.Sengupta, Windows Experience MVP


    Sunday, June 14, 2015 12:16 AM
  • Hi gggmarquez,

    Apart from S.Sengupta`s suggestion, we can try to check the Event Viewer for any warning or error messages recorded here.

    Event Viewer\Windows Logs \Applications,System

    Best regards


    Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com.

    Tuesday, June 16, 2015 5:37 AM
    Moderator
  • S. Sengupta,

    I have the same problem as the initial poster and followed your advice and uninstalled the root hub.  The problem I have now is I cannot log into my computer as my keyboard and mouse are USB and I have no other ports that are non USB in order to connect a different keyboard. 

    How can I enable my keyboard in order to log in.


    • Edited by Mjrieck Sunday, February 25, 2018 1:01 PM
    Sunday, February 25, 2018 12:56 PM
  • I'm having the same issue on a Win7 laptop with a bunch of usb devices attached.
    Got two hard external usb drives, mouse dongle, two hubs (one is 2.0 the other 3.0) and whenever I plug in a few more devices in any port (internal or hub) I get that dreaded "You have 

    exceeded the number of port... blah blah..."
    And here's the kicker, it used to work up to 20 to 30 devices with no problems, just recently started complaining with as few as 10 connected devices.
    And yes I've done the usual, turn off/on the laptop, uninstalled/reinstalled the hubs and devices, tied pretty much everything.  It's quite apparent that there's some "magic" registry key 

    which is causing all this mayhem.
    I will NOT reinstall Windows, since I have years of careful settings and apps installed which I'm not about to waste my time redoing.  Remember it used to work just fine with 20 to 30 

    devices, but now only about 10.

    Has anyone found a registry tweak or an app which could solve this annoying issue?

    Regards,
    BillA
    Thursday, August 8, 2019 11:29 PM