Windows 8 and 8.1 Forums


Unknown USB Device (Device Descriptor Request Failed)

  1. #1

    Unknown USB Device (Device Descriptor Request Failed)


    My computer keeps telling me Unknown USB Device (Device Descriptor Request Failed), so I looked up how to fix it and they told me to uninstall it then scan for hardware changes and it will reappear working properly. Only it did not come back working properly, it came back the same. I am also 98% sure that this "unknown USB device" is my built-in webcam that has never once worked. So if someone wants to help me out and allow me to use my webcam that would be great!

      My System SpecsSystem Spec

  2. #2


    Maryland USA
    Posts : 758
    Windows 8 & Windows 7 Dual Boot


    Hi there, can you first tell us what is the Name and Model number of your system?

    What OS are you running

    im sorry if you already listed this, as I cannot see your specs from the Windows Forum App..

    I take it this is a laptop?
      My System SpecsSystem Spec

  3. #3


    Yes, this is a laptop. ASUS Notebook Series RALINK/RT5390. Windows 8.1
      My System SpecsSystem Spec

  4. #4


    Maryland USA
    Posts : 758
    Windows 8 & Windows 7 Dual Boot


    Webcams are notorious with usb issues when the wrong driver is installed, replaced, or corrupt..

    Please download SLIMDRIVERS FREE and scan your devices, update all drivers or at least CHIPSET, USB HOST CONTROLLERS and WEBCAM

    Lets start with that...

    Btw what USB. Devices do you always have connected to your laptop?
      My System SpecsSystem Spec

  5. #5


    I updated all drivers and it worked! But, alas, it is again not working. I don't have any USB devices always connected to my laptop.
      My System SpecsSystem Spec

  6. #6


    United States
    Posts : 3,093
    Windows 8.1 Pro 64-bit


    This is a handy utility: View any installed/connected USB device on your system

    Uninstall things that don't look right then reboot.
      My System SpecsSystem Spec

  7. #7


    how do I know if they are not right?
      My System SpecsSystem Spec

  8. #8


    United States
    Posts : 3,093
    Windows 8.1 Pro 64-bit


    Doesn't hurt to uninstall whatever you don't recognize. Next time you plug it in it will install adain. Great tool for getting rid of old or conflicting garbage.
      My System SpecsSystem Spec

  9. #9


    well, none of this is working. Anyone else got any ideas?
      My System SpecsSystem Spec

  10. #10


    Quote Originally Posted by careacchiardo View Post
    well, none of this is working. Anyone else got any ideas?
    Try this one than:
    Download USB Device Tree Viewer - MajorGeeks
      My System SpecsSystem Spec

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Unknown USB Device (Device Descriptor Request Failed)
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