Unknown usb device for dv9910us

webcam and dvd not working plas help
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Ok. Lets work on the webcam and DVD issue first. Have they just recently stopped working? If so I would try restoring the computer from a previous backup point. What operating system are you using?
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  • "Unknown USB Device"

    I got my 2GB nano last Monday. I could successfuly install it on my laptop and upload some songs to it. That done, I wrapped it again and gave it to my wife, so she and the kids could "surprise" me for my Birthday. Yesterday I got it,listened to the "sample songs that came with it", and today I tried to upload some more songs, but to no avail. Everytime I plug it in, all I get is an error message from windows, stating "Unknown USB Device". I tried everything from the iPod support site and from Windows help, but the nano simply won't be recognized. Oh, I tried to hook it up to my desktop at home as well, but nada as well. Same message.
    Is my cable fried? Is my iPod connector fried? Can someone pinpoint the problem?
    To worsen things even further, I live in Brazil, where the first nanos won't be around until Christmas, and support is but a dream...
    Help!
    Ruy

    These steps should help you with the 'Unknown USB Device' issue, Ruy:
    First, make hidden folders visible. Open My Computer and choose Tools/Folder Options/View tab. Click on 'Show hidden files and folders' and click OK.
    In the Add New Hardware Wizard, have it search in C:\windows\inf for usbstor.inf. This file is required for windows to properly configure the driver. If Windows finds the driver there, you're done.
    If Windows does not find the proper driver there, copy usbstor.sys from C:\windows\servicepack\i386 to C:\windows\system32\drivers.
    If you can't find the usbstor.inf file on your system, you can get it here: usbstor.inf
    After copying the usbstor.inf driver file to C:\Windows\inf, right-click on My Computer and choose ‘Manage.'
    Click on the button labeled 'Device Manager.'
    Click to open the list under 'Universal Serial Bus Controllers.'
    Right click on any mass storage devices with the exclamation icon next to them and select 'Update Driver.'
    Check the option 'Install from a list or a specific location' and then click to continue.
    Check next to 'Include this location in the search' and enter 'C:\windows\inf'.
    Click on 'Next' and follow the steps to complete the driver installation wizard.

  • Unknown USB Device when MuVo TX plugged in USB P

    The following message came up when I plugged in my MuVo TX in a USB Port
    Using WIndows XP
    USB attached has malfunctioned
    Windows does not recognize it
    Unknown USB Device
    Does this mean that I have a faulty player? When I first bought it on January 2 2005
    I installed approx 25 songs and it works perfect. Now that I want to change these songs
    to new ones, my MuVo TX is not recognized by Windows XP. Tried several other
    computers with same results.
    Can any one suggest a fix?
    Thanks

    If other PCs are giving the same error, then I think you can be sure the player is at fault somehow.
    Have you tried the recovery process? Download the latest driver (if required) and firmware from http://www.nomadworld.com/downloads/drivers. Install the driver file (if required). After you have installed the driver, press and hold the PLAY button, continue holding the button while inserting the player into the USB port for about 0-5 sec. Run the firmware update file and check/tick the 'Format Data Area' check box and click on 'Start'.
    If this doesn't help then I think you can be sure the player is faulty.

  • Presario V5094EA, usb device malfunctioned, unknown usb device

    product: presario V5094EA running win XP,
    hi am having a roblem with the usb ports on my laptop they were working fine up untill two weeks ago when they just decided to stop working,
    now every time i plug something in they first find new hardware then it reports back a device has malfunctioned, unknown usb device, whether its a memory stick or my usb modem
    i have formatted the hard drive reinstalled all the drivers from the recovery discs,
    i even tried the information in an earlier post about disconnecting the battery for a period which i did for half an hour, but got the same response when i connected it all back up.
    am beginning to think this could be hardware related does any one have any ideas before i go buy a new motherboard,
    the laptop is about 6 years old now so well out of warranty,
    thanks in advance
    alan

    It should do a progress reading with percentages. If it ran all the way through and did not say anything was corrupt then I am afraid you have a hardware issue going.

  • Disk won't mount - Unknown USB Device (Link in Compliance Mode)

    I have an HP Envy DV7 (dv7-7243cl ) with Windows 8 Pro x64. My Western Digital 2 terabyte My Book USB3.0 external drive periodically won't mount ( sometimes it will, sometimes it won't). The drive has its own power source.
    When this happens Windows device manager shows - Unknown USB Device (Link in Compliance Mode). This can happen if the system is up and running and I plug the drive into the USB port or on system startup where the drive is already plugged in.
    Any clue how to fix this?
    Other details:
    Intel(R) Core(TM) i7-3630QM CPU @ 2.40GHz
    12 Gig memory
    Intel(R) HD Graphics 4000
    System board 181C 52.24
    Bios F.26

    Well, the problem is that - as outlined in one of the articles I linked to - some USB devices will not work in Safe Mode; that may have to do with the fact the Safe Mode is only meant to be a troubleshooting tool, not a regular way of booting up. Did you have the USB devices attached while upgrading to 10.6? That would also be a problem - I unplug everything except keyboard and mouse.And, did you repair permissions after the upgrade? If not, do it now.
    And, the other problem is the fact that you wait 1 - 2 years before addressing the issue; when you had it in for the last repair and it still exhibited the same problems afterwards, you should would have taken it back, possibly with some screenshots, exact notes of how/when/error messages, etc. and insisted on having it fixed or replaced.
    So, I'd run the Apple Hardware Test (after you make sure that you have a complete backup) - instructions here:
    http://support.apple.com/kb/HT1509
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  • Unknown USB Device in Windows - VISA does not see it

    Hello,
    I'm trying to connect my STM microcontroller to my computer using USB protocol and VISA software. When I plug STM USB device into USB port Windows sees it as unknown device and can not find any driver for it. I assume that this is situation VISA was created for. So I want to use a driver wizard to create driver for this device, but VISA does not display it in a device list. I tried to create and install driver for my device as if it was not connected, and installed created driver manually but it did not work.
    Is it possible that Windows detects a USB device and VISA can't see it?

    It actually depends what sort of USB device it should be. If it is a COMM USB class device, Windows should be able to pick it up directly as serial port, if it is some proprietary USB class, then you either have to get a driver installed and access that driver somehow, or create an INF file with the VISA driver wizard for it and write the driver yourself in LabVIEW using the VISA USB Raw interface. Without a very good description of the low level USB protocol however this last option is a complete no go.
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    Rolf Kalbermatter
    CIT Engineering Netherlands
    a division of Test & Measurement Solutions

  • Internal web cam does not work and unknown usb device pops up

          I have had my Pavillion DV6 1230us laptop now for about 7 years now and it was working great untill last year. When the lap top comes out of sleep mode or I restart the computer the " unkown device" balloon pops up. I have tried the following fixes, un-installing all the usb devices and did a reboot, I removed the main battery and held the power button for 2 minutes and re-installed it , I have re-installed the webcam drivers from HP and even removed and installed  the small mother board battery with no sucess. When the " unknown device " balloon pops up I can hear an audio prompt like I am plugging and un-plugging a usb device in one of the ports but I am just watching and hearing the problem happening.

    Hey Scotman,
    The Webcam would not be listed as USB device as it is built into the Notebook. Do you have anything connected USB? What do you see in device manager for your Image devices? Here is a video on Webcam. I am not sure if anything will help you in it or not. If you remove all USB devices in the device manager and remove all USB cords from the computer the balloon should not appear on restart.
    Hope this helps.
    Thanks.
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

  • USB Device for IPOD not recognized by Windows, whether ipod connected or no

    During the past few days I have received a pop up error message from (I would think) Windows that the USB device is not recognized. I have the USB plug for the ipod connected (as always)but the ipod isn't even connected. It keeps popping up like every few seconds that the usb device is not recognized.
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    I'm having the same problem. Ever since I upgraded to version 7, iTunes & my PC no longer recognise my iPod, and it therefore won't sync.
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  • Ipod showing up as "unknown usb device"

    I'm betting this is the same problem as "windows doesn't recognize my ipod" but I wanted to make sure. I got the nano for christmas, successfully uploaded happilly to it for a few weeks and lately my computer keeps saying "the usb device has malfunctioned" and it can't identify it as an ipod. An apple store already restored the thing, it works on other computers, but still not on mine. I followed the instructions for turning iff power saving on the usb hub when using a laptop and that fixed the problem for exactly one day. Now it's useless again.
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    i've encountered the same..try reseting your ipod...discon it..then hold both menu and center button until ipod turns off and the apple logo appears...wait for 5 sec... then insert it again..see what happens...or transfer it to another port...u should have 2 ports there..or are you using a 1.1 usb port? naturally most pc does not recognize if it is a 1.1 usb port..try installing the suggested 2.0 card installer...good luck!..

  • IPod nano -- unknown USB device

    Hi.
    My iPod worked perfectly for 2 weeks. Since this morning, when I connect it to my PC a message "Unoknown USB Device" is showed.
    I know how to reset mi iPod, but it doesn't work. I have 6 USB ports 2.0, I used all of them and that doesn't work. I reset my computer and my iPod several times an that doesn't work.
    I see that much people have this problem.
    ¿What can I do?.
    THANKS !!

    Hi there,
    I have the same problem with connecting my nano to the computer. every time i connect it, it tells me that the device has malfunctioned and is not recognised.
    I tried reinstalling the ipod software which didn't succeed becuase it didnt' recognise that it was plugged in. As well as this i tried to put into disc mode, where it still didn't recognise.
    Finally i tried the disk management and it didn't pick it up.... HELP!!!
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  • Trade devices? Pantech UML290 USB device for MiFi 4510...

    I have a Pantech UML290 broadband USB device. The portable MiFi would better suit my needs. I am still under contract and don't want to pay full retail just to get the MiFi.
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    Check out Cradlepoint or peplink
    Cradlepoint has affordable price routers...
    >Link deleted. Posting links of outside vendors is not allowed per the VZW ToS<
    peplink has the most reliable routers..
    >Link deleted. Posting links of outside vendors is not allowed per the VZW ToS<
    Here is an image of how I use my Pantech UML290 and Peplink Balance 20 Router.
    [IMG]http://i50.tinypic.com/dwpan4.jpg[/IMG]
    Message was edited by: Verizon Moderator

  • USB devices for audio output

    for five or six years, I have been using an EDIROL device for outputting from the USB port to a standard stereo amplifier.
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    Is there a wrap-up out there, possibly done by one of the Mac magazines or blogs or whatever?
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  • How SCCM 2012 compliance function find unknown usb device

    As we all know the SCCM get its own compliance DB and can monitor the all device information.
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    Last edited by rwiggins (2014-12-14 00:26:39)

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