USB device not recognized. unknown device

USB device not recognized, peripheral unknown.  I can not connect any USB

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If no USB device does not is that you need to install drivers of motherboard (chipset) or your USB ports on the motherboard failed. Since you have told us nothing about your computer, it's as specific as I can get. See the links in general troubleshooting below and if they do not help, post back with the missing information by:

Help us help you:

http://www.elephantboycomputers.com/page2.html#Tech_Support - See the article "how to write a Post.
http://support.microsoft.com/default.aspx/kb/555375 - how to ask a Question

Troubleshooting USB by Uwe Sieber -http://www.uwe-sieber.de/usbtrouble_e.html

General USB troubleshooting in Windows XP -http://support.microsoft.com/?kbid=310575

MS - MVP - Elephant Boy computers - don't panic!

Tags: Windows

Similar Questions

  • Vista - usb ports are not recognized unknown device

    Vista - usb ports are not recognized unknown device. any usb device it appears unknown. all worked a few days hardly, but after that I connected my Kodak camera - which does not, now, nothing works. Any help would be appreciated.

    Hello

    Thank you for using the Microsoft Windows Vista Forums.

    Follow the instructions below that may help you resolve the issue.

    Method 1:

    Try to connect USB devices to a different USB port and check if you are able to access.

    Method 2:

    Click on the link below to run Fix it which will help you to solve the problem.

    Tips for solving problems of USB devices

    http://windowshelp.Microsoft.com/Windows/en-us/help/c39bd203-f729-47a4-8351-83291e13c8a81033.mspx

    Click on the link below and install the update.

    Rollup cumulative update for USB in Windows Vista Basic components

    http://support.Microsoft.com/kb/941600

    Try to connect the camcorder to the other USB port and on the other computer and see if the problem is resolved.

    Method 3:

    Let us try to disable the Antivirus security software and check the number.

    Re-enable the security software after checking the issue.

    You can also try disabling the firewall and check the issue.

    Re-enable the firewall after checking the issue.

    Method 4:

    A clean boot helps eliminate software conflicts.  Let us check if software is causing the problem by following the clean boot procedure.

    To perform the clean boot procedure, follow the instructions in the link below.

    Step 1: Perform a clean boot

    Step 2: Enable half the services

    Step 3: Determine whether the problem returns

    Step 4: Enable half of the startup items
    Step 5: Determine whether the problem returns

    Step 6: Resolve the problem

    Step 7: Reset the computer to start as usual

    How to troubleshoot a problem by performing a clean boot in Windows Vista

    http://support.Microsoft.com/kb/929135

    After checking the problem, turn the computer back to the Normal mode.

    Uninstall or update the program that is causing the problem.

    Check whether the problem is resolved.

    You can also check out the link below.

    http://social.answers.Microsoft.com/forums/en-us/vistahardware/thread/6be4581d-8fbd-407F-815E-b475c35ca586

    Please post back and let us know if it helped to solve your problem.

    Kind regards

    KarthiK TP

  • Ports USB Host not recognized ESX4i of devices

    I have a new HP dl 360 G6, I installed the ESX4i update1 custom hypervisor HP with the latest patches of ´s, HW USB ports are activated by the server BIOS and I create a new machine virtual Windows Server 2008 x 32 with allows USB ports, USB ports are shown by windows 2008, but when I plug a peripheral USB is not recognized I need to plug a USB 72 GB DAT, I tried also with a USB and no job. All USB devices are 2.0.

    Yes, you can redirect USB via VMDirectPath, but you will lose VMotion, HA, instant = backup. I had to recoomend a look at USB over IP as Digi AnywhereUSB

    ---

    MCSA, MCTS, VCP, VMware vExpert 2009

    http://blog.vadmin.ru

  • Keyboard Dell Bluetooth is not recognized when energy savings and will not wake my computer. My usb mouse not recognized or the other.

    My Dell Bluetooth keyboard is not recognized when energy savings and will not wake my computer. My usb mouse not recognized or the other.  I use keyboard now, but it seems not be installed yet when I check my keyboard or bluetooth devices. Keyboard does not work after so I'll try to figure out what to do before moving into the power saving mode. Help, please. I did all the updates from microsoft, and there is no update for my bluetooth device, I checked.

    Hello

    1. have you made changes on the computer before this problem?
    2. What is the model of the keyboard?
    3. are you an error message or error code?
    4. which version of the Windows operating system is installed on your computer?

    I suggest you to consult the following Microsoft article and check if it helps.

    On troubleshooting in Windows 7 power management: http://support.microsoft.com/kb/980869

    Troubleshoot keyboard: http://windows.microsoft.com/en-US/windows-vista/Troubleshoot-keyboard-problems

    Keyboard and Microsoft mouse refer:

    Troubleshoot the incidents of the response to the mouse or wireless keyboard: http://support.microsoft.com/kb/838398

    Reference:

    Troubleshooting external Dell Wireless or Bluetooth keyboards and mice: http://support.Dell.com/support/topics/global.aspx/support/KCS/document?docid=277550#Issue0_1

  • Qosmio F10 - devices USB is not recognized correctly

    Hello
    I had major problems with the USB ports on my Qosmio F10. Everytime I try to plug in a USB device, the F10 recognizes there is only something there, but always categorizes him as an unknown device. For example, whenever I try to attach a USB mouse, he is instantly recognizes her not, even after already spending in the Device Manager and manually install a driver.

    This has been the case since I bought the laptop 5 months ago, but I can't ignore it any longer.

    I have already tried:

    -uninstall all drivers and USB controller hub and reinstall
    -ensuring that the power save to usb devices was unchecked
    -check "install anyway" in the driver signing options

    When I open the Device Manager my USB key looks like this

    -Intel (R) 82801DB/DBM USB 2.0 Enhanced Controller - 24 CD
    -Intel (R) 82801DB/DBM USB Universal Host Controller - 24 2 Serial
    -Intel (R) 82801DB/DBM USB Universal Host Controller Serial - 4 of 24
    -Intel (R) 82801DB/DBM USB Universal Host Controller - 24 7 Serial
    -USB Root Hub
    -USB Root Hub
    -USB Root Hub
    -USB Root Hub

    Any help on this is much appreciated as its driving me crazy :-)

    Hello

    The entries in Device Manager look ok.
    If the laptop recognizes the USB device, so everything is ok. If the device appears as an unknown device in Device Manager, you need a driver in particular. Sometimes, the external device needs a driver that should be supplied with the device.

    I assume you are using the Toshiba Recovery CD. In this case then phone has pre-installed all the drivers needed and you don t need the 3rd USB controller drivers.

  • USB ports not recognizing any device

    I plugged into multiple items - iPod, iphone, USB keys.  Nothing is recognized.

    Hi kslicho

     

    1. What is the exact error message you get when you try to access devices?
    2. for how long have you been faced with this problem?
    3. have you made any recent changes on the computer?

    Method 1:

    You can even check if you get the error messages for the devices in the Device Manager. Please refer to the below steps.
    a. open the Device Manager by clicking the Start button, click on the Control Panel, clicking system and Maintenance, and then clicking Device Manager. If you are prompted for an administrator password or a confirmation, type the password or provide confirmation.
    b b.. in Device Manager, look for the device and then right click on the name of the device and go to properties.
    c. now on the general tab, check the status of the device. Let us know the status of the device. Also you can inform an error code with the State.

    Method 2:

    You can even check if uninstalling and reinstalling USB drivers to connect the hard drive. You can disconnect all USB devices and then perform the following steps:

    a. click Startand then click Control Panel.

    b. click system and Maintenance, click Systemand then click on Device Manager.

    Note If Control Panel is in Classic view, double-click System, and then click Device Manager.
    If you are prompted for an administrator password or a confirmation, type the password, or click allow.

    (c) in the Device Manager, double click on extend "Controllers of Bus USB", right click on the host
    Controller, click "Uninstall" and then click on 'OK '.

    d. Repeat step 2 to uninstall all items under 'USB Bus controllers'.

    Then, restart your computer and Windows 7 will automatically reinstall all USB controllers.

     

    I hope this helps.

  • USB is not recognized PNP devices

    I have a HP Mini 110 runing XP SP3 and updates.

    When I connect various USB devices as a generic USB, several thumb hub disc, an externel usb IDE drive, an HP USB keyboard and a usb mouse.

    When I plug in I hear the chime that the device has been discovered.  I can find the device in the Device Manager in the 'other' file.

    These devices, all work on another Windows XP desktop system.

    So I wonder if somehow the PNP mapping is watered or generic device .inf files are missing.  It's just a wild guess.

    Todd

    Well, I found a solution of sorts.  I restored to a previous point restoure with%SystemRoot%\System32\Restore\Rstrui.exe.  This seems to cause problems with Norton Antivirus, but it solved the problem of USB.

    If we do not know the real reason that wouldn't be not configure devices connected to the USB ports, but I have a solution.  At least until that everything that has been done in the last two months since the restore point I used happen again.

    Todd

  • USB ports not recognizing devices

    USB ports for laptop Toshiba Sateliite do not recognize camera or other devices?

    Hello

    Check the configuration/settings (BIOS/CMOS) often F2 when you start - make sure that USB is enabled.

    For a laptop, using a real computer shop (no leeks and glances at a Best Buy or other large surfaces)
    Stores) or system manufacturer support.

    Check with Toshiba support, their drivers online (update or reinstall) and their forums.

    Toshiba - Forums
    http://laptopforums.Toshiba.com/

    Toshiba - Contacts
    http://www.CSD.Toshiba.com/cgi-bin/TAIS/support/JSP/navShell.jsp?CF=su_contact

    Toshiba - drivers - access your model
    http://www.CSD.Toshiba.com/cgi-bin/TAIS/support/JSP/home.jsp?NAV=download

    Toshiba - Support
    http://www.CSD.Toshiba.com/cgi-bin/TAIS/support/JSP/home.jsp

    ------------------

    Follow these steps to remove corruption and missing/damaged file system repair or replacement.

    Run DiskCleanup - start - all programs - Accessories - System Tools - Disk Cleanup

    Start - type in the search box - find command top - RIGHT CLICK – RUN AS ADMIN

    sfc/scannow

    How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe) program
    generates in Windows Vista cbs.log
    http://support.Microsoft.com/kb/928228

    Then, run checkdisk - schedule it to run at next boot, then apply OK your way out, then restart.

    How to run the check disk at startup in Vista
    http://www.Vistax64.com/tutorials/67612-check-disk-Chkdsk.html

    -----------------------------------------------

    Then lets refresh the USB stack

    Control the click Control Panel - Device Manager - no matter where in the box of white/white - then the VIEW - see the
    Devices disabled - look around (with the exception of USB controllers) for your devices (can have
    zero or more than one) and top - right click UNINSTALL.

    Control Panel - right CLICK on EVERYTHING - Serial USB controllers - Device Manager and UNINSTALL
    all except the category itself - REBOOT - it refreshes the drive and battery USB

    This KB shows XP how to and the method of Vista is identical
    http://support.Microsoft.com/kb/310575

    This is a utility to help you, but do 1 above.

    USBDeview is a small utility that lists all USB devices currently connected to your computer, thus
    as all USB devices that you previously used. Run Options and check the 1st three choices to see to it there
    Is there.

    http://www.NirSoft.NET/utils/usb_devices_view.html

    You must remove all instances of the devices and restart.

    ----------------------------------------------

    If necessary try these two:

    Tips for solving problems of USB devices - and a Mr Fixit
    http://windowshelp.Microsoft.com/Windows/en-us/help/c39bd203-f729-47a4-8351-83291e13c8a81033.mspx#EGB

    Hardware devices not detected or not working - Mr. Fixit
    http://support.Microsoft.com/GP/hardware_device_problems

    I hope this helps and happy holidays!

    Rob Brown - MS MVP - Windows Desktop Experience: Bike - Mark Twain said it right.

  • Peripheral USB is not recognized (external hard drive)

    I have a western digital external drive who worked originally on windows XP Edition family, unfortunately this computer crashed and had to reinstall everything. After ending, I went to retrieve some data off the drive and it keeps giving error usb device not recognized. I looked on a lot of different 'solutions' to nothing does not. I can connect to other computers running the same operating system and he shoots very well if it is not the drive. It seems as if a driver is missing, but I checked with Western Digital, and they say the questions is a mistake of operating system, all updates and service packs have been installed. Ive tried all online of the easy solution like just unplug the computer and the drive and restart, remove and reinstall the drivers in the OS System. In Device Manager its reports as an unknown device under the USB bus controllers section. I need to get this to work by car no matter either if it needs to be reformatted or repartitioned, but I can't even pull up on the drive to reformat so don't know what to do. any suggestions are greatly appreciated.

    The problems detected as "unknown".

    http://support.Microsoft.com/kb/314464

    WD Firmware Updater. (May be necessary since you have reinstalled the OS)

    http://www.wdc.com/wdproducts/wdsmartwareupdate/?ID=wdfMyPassport&OS=win&FW=1

  • USB ports not recognized anymore

    I have Vista.  USB ports and ports that accept cards camera no longer recognize them.  Scanner can be moved from USB port to the USB port and works but "Explorer" does not show that they exist.  How to recognize camera cards (mainly) as they did before?  Windows offers device (camera card) has a problem, but this isn't the case.  Card works so executed through camera (USB cable to the USB port) in two different cases with two different cameras.  Also plugged on the USP port scanner is not recognized by the function 'Explorer' but actually works very well.

    Hello ghpots,

    ·         What happens when connect cards camera on USB ports, it installs the device drivers?

    ·         What are the changes that you made to your computer, since it has stopped working.

    When you connect your devices to the USB ports, check the status of the device in the Device Manager. Check if you see a yellow fringe or exclamations in the Device Manager.

    I suggest that you remove and then reinstall all USB controllers.

    To remove and reinstall all USB controllers, follow these steps:

    1. click on start, type Device Manager and open the Device Manager.

    2 right-click every device under the Bus USB controllers node and then click on uninstall to remove them one at a time.

    3. restart the computer and reinstall the USB controllers.

    Plug in the removable USB storage device and test to make sure that the problem is solved.

    Check the Device Manager to see if the unit under section USB or other devices. To do this, follow the procedures below:

    Method 1:

    1. click on Start, right click computerand select Properties .

    2. click on Device Manager.

    3. click on the (+) sign next to Universal Serial Bus controllers and next to the peripheral plus other section.

    Look for the USB device under the Universal Serial Bus controllers, or under the other devices section.

    4. If the unit is under Bus USB controllers or other devices, click on the reference to the 'unknown' device name, and then click Uninstall to remove the device.

    5. close Device Manager, and then restart the computer.

    6. If the USB device that has problems with software and it has not already been installed, install the software, now follow the planned manufacturer of the directives.

    7 reconnect the USB device that had issues and test to see if it works.

    The unit should now work correctly. Continue if the device name is not found in the Device Manager.

    Method 2: There may be a problem with the USB port. Try connecting to a different USB port. If the USB device is displayed in Device Manager after plugging the cable in a different port, then uninstall and reinstall the software of USB device driver.

    Method 3: Check the manufacturer of the device for support if the device is still unable to display.

    Thank you
    Irfan H, Engineer Support Microsoft Answers. Visit our Microsoft answers feedback Forum and let us know what you think.

  • USB keyboard not recognized on USB 2.0 Ports

    Hello, I have a dell inspiron 3521.

    It has:

    2 USB 2.0 ports.

    2 USB 3.0 ports.

    Whenever I connect my USB keyboard to any port 2.0, it is not recognized.

    Instead, it is shown in the unknown devices section.

    Earlier, when I had problems with the host VMWare keyboard driver, I had disabled, uninstalled, deleted ad form pilot system via the Device Manager.

    Then the keyboard worked until you restart.

    Now, it is not recognized on all USB 2.0 ports, but works perfectly in a USB 3.0 port.

    I tried the following:

    Uninstalled the USB drivers and restarted the system.

    Tried to update the driver software (all Device Manager).

    Tried with another keyboard, but it does not work either.

    What should I do next?

    Please suggest me some solutions.

    Hi AdityaMudgerikar123,

    I would recommend that you consult article Troubleshooting wired keyboards that do not or evil characters such.

    Thank you!

  • USB-6009 not recognized after the blue screen of death

    I have two devices USB-6009, used with NOR-DAQmx and Labview to make some analogue simple analogue input and output.  The USB box - two 6009 were previously works very well on this PC.  Recently, I got a blue screen of death, associated with a different USB device to (non - OR) connected to the PC.  I not save the information of the blue screen of death.  When I restarted the computer, the USB-6009 devices were no longer recognized by Labview / MAX.  The Green LED on the USB - 6009 s do not come.  The USB - 6009 s appear in the Device Manager of Windows with a yellow exclamation point ("Windows cannot load the driver for this hardware device").  If I connect the USB-6009 case to another PC, MAX recognizes them on this PC, and I get the usual flashing green LED.  If I connect another USB-6009 (never connected to this PC), I get a green LED solid, and, says Windows cannot load the driver.

    I am running Vista, Labview 8.5 and NOR-DAQmx 8.9.  I rebooted 5 - 6 times, I tried disabling and the reactivation of the USB-6009 by windows Device Manager, I tried the options "update driver" in Device Manager.  Any advice on how else to solve it?  Thank you!

    The driver update and turn do nothing to the main driver - DAQmx. Reinstall or repair that.

  • external USB drives not recognized under xp pro 64

    I bought a genuine version of XP Pro 64 to load on my computer and because Win 7 froze with drivers nVidia graphics.

    When I plug a recently bought Seagate Goflex or one of the new Western Digital external hard drives, they are not recognized.

    They do not show on my computer or disk management at all.

    They appear in Device Manager with a yellow question mark big under 'other devices '.

    I right click on the hard drive in the Device Manager to update the driver, and it always fails.

    Before ask you, these USB drives work perfectly on my other XP Home 32 System. The cables are good.

    I tried different ports, front and rear... no good.

    My system XP 64 Prp is updated w/Windows update and software chip to the motherboard.

    Strangely, I have a hard drive WD Passport USB 500 Gb one-year-old that works fine on XP 64 system.

    WD technicians say that I am the only one with this problem. PlugNPlay needs no driver, what do say.

    I also have IDE/SATA USB cable w / the power cable, I use to connect my old internal drives.

    Works fine on the XP Home 32, but I get the error "USB to ATA/ATAPI Bridge" in the device with the 64-bit System Manager.

    Yes these devices are all "turned on."

    Something is missing on the XP 64 system.

    Help is very appreciated.

    Been looking for a solution for a week now.

    Thank you.

    Hello

    See the following articles that may help you resolve this problem.

    A computer that is running Windows XP cannot detect a USB, an Apple iPod flash drive or an external hard disk drive
    http://support.Microsoft.com/kb/925196
    Why my computer does not detect my new USB device when I run Windows XP or Windows Server 2003?
    http://support.Microsoft.com/kb/314634

  • USB printer not recognized after Windows update

    OT: usb device not recognized

    After that suddenly stop, reboot, done, the device is plugged in where the printer indicates that it does not recognize the device. I said abattissent unplug it and reconnect it and if it doesn't work me to replace... I re install the driver for the Hpdeskjet940c but nothing works...

    Hello grasshopper.

    This problem may be caused mainly by broken printer drivers, this could have been caused when you installed the updates. I suggest that you start with a restoration of the system on the computer by choosing a restore point when it was working fine.

    a. Click Start, type system restore in the search box and then in the list click on the system restore program.

    b. If you are prompted for an administrator password or a confirmation, type your password or click on continue.

    (c) in the System Restore dialog box, click on choose a different restore point and then click Next.

    d. in the list of restore points, click a restore point created before you started having the problem, and then click Next.

    e. click Finish.

    You can see the following article for reference:

    http://Windows.Microsoft.com/en-us/Windows7/products/features/system-restore

    You can also try driver restore on the computer and check if it helps.

    To roll back a driver in Windows send the driver to the version that was finally installed for the device. Restoring a driver is an easy way to return a driver for a working version when a driver update fails to fix a problem or maybe even a new problem.

    a. open the Device Manager. To do this, click Start, type device in the area Manager search and then click on Device Manager in the list programs.

    b. right click on the device for which the previous version of the driver is desired and then click Properties.

    c. click the tab drivers.

    d. click on Roll Back Driver.

    Thank you
    Irfan H, Engineer Support Microsoft Answers. Visit ourMicrosoft answers feedback Forum and let us know what you think.

  • Ports USB suddenly not recognized

    I have a laptop with windows Vista on it and it came with 3 USB ports.  After doing some cleanup, defrag and that you back up all of a sudden none of them are recognized.  They appear in the Device Manager but not in the "computer" section  The wireless mouse does not work and our Ipod is not recognized, although it will load.  We did all kinds of update.  Have not uninstalled and reinstalled material... bit nervous about it and don't really know how to do it.  Good instructions on how to do it would be useful if that's what we need to do.  What should we do?

    Any help is appreciated.

    Hello

    Try a system restore to where the USB ports worked.

    How to make a Vista system restore
    http://www.Vistax64.com/tutorials/76905-System-Restore-how.html
    ===================================

    If necessary:

    Check the configuration/settings (BIOS/CMOS) often F2 when you start - make sure that USB is enabled.

    For a laptop, using a real computer shop (no leeks and glances at a Best Buy or any other
    Department stores) or system manufacturer support.

    ------------------

    Follow these steps to remove corruption and missing/damaged file system repair or replacement.

    Run DiskCleanup - start - all programs - Accessories - System Tools - Disk Cleanup

    Start - type in the search box - find command top - RIGHT CLICK – RUN AS ADMIN

    sfc/scannow

    How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe) program
    generates in Windows Vista cbs.log
    http://support.Microsoft.com/kb/928228

    Then, run checkdisk - schedule it to run at next boot, then apply OK your way out, then restart.

    How to run the check disk at startup in Vista
    http://www.Vistax64.com/tutorials/67612-check-disk-Chkdsk.html

    -----------------------------------------------

    Then lets refresh the USB stack

    Control the click Control Panel - Device Manager - no matter where in the box of white/white - then the VIEW - see the
    Devices disabled - look around (with the exception of USB controllers) for your devices (can have
    zero or more than one) and top - right click UNINSTALL.

    Control Panel - right CLICK on EVERYTHING - Serial USB controllers - Device Manager and UNINSTALL
    all except the category itself - REBOOT - it refreshes the drive and battery USB

    This KB shows XP how to and the method of Vista is identical
    http://support.Microsoft.com/kb/310575

    This is a utility to help you, but do 1 above.

    USBDeview is a small utility that lists all USB devices currently connected to your computer, thus
    as all USB devices that you previously used. Run Options and check the 1st three choices to see to it there
    Is there.

    http://www.NirSoft.NET/utils/usb_devices_view.html

    You must remove all instances of the devices and restart.

    ----------------------------------------------

    If necessary try these two:

    Tips for solving problems of USB devices - and a Mr Fixit
    http://windowshelp.Microsoft.com/Windows/en-us/help/c39bd203-f729-47a4-8351-83291e13c8a81033.mspx#EGB

    Hardware devices not detected or not working - Mr. Fixit
    http://support.Microsoft.com/GP/hardware_device_problems

    I hope this helps.

    Rob Brown - MS MVP - Windows Desktop Experience: Bike - Mark Twain said it right.

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