But powered USB devices are not recognized

Similar Questions

• My USB devices are not recognized, but they have a power

  My USB devices are not recognized, the only ones to be recognized are my mouse and keyboard. Each device is powered (motherboard works fine), but Windows 7 isn't their read (although sometimes I'll get a code 43). I have the latest chipset.

  I tried right click and uninstall each device and rebooted the computer. Nothing has fixed this.

  My external hard drive, ipod and other devices that involve the transfer of data seem to ONLY get power and nothing else.

  It is not material because all my devices work on my laptop. Also my motherboard works fine (it's the 2nd RMA) and it has been tested at the factory to make sure of him.

  I would really appreciate help with this

  Hello

  Please follow the methods.

  Method 1:

  Run the troubleshooter from the link.

  http://Windows.Microsoft.com/en-us/Windows7/open-the-hardware-and-devices-Troubleshooter

   

  Method 2:

  Try to uninstall and reinstall the USB controllers

  a. click the Start button.

  b in the start search box, type devmgmt.msc and press enter

  c. expand Bus USB controllers

  d. right-click on the first USB controllerr under Bus USB controllers and then click Uninstall to remove it. Repeat these steps for the entire USB under Controllers USB Bus controller.

  e. restart the computer. After the computer starts, Windows will automatically check for changes on the hardware and reinstall all USB controllers that you uninstalled.

  I would also ask you to contact the manufacturer of the computer to help.

• External USB devices are not recognized

  * Original title: Ext usb devices appearing is not in my computer

  ACer laptop WIn 7 amd a8 quadruple-heart: when I log about 1 T external usb 2.0 or 3.0 hardrives or key USB 64 G,.
  Device Manager displays the devices, but they do not appear in the list of computers. I have other ext hardrives and the keys that operate without problem.
  I have to go to disk management and see that they appear but they do not have a drive label assigned.
  Then I have to give it a label letter manually it will appear under my computer.

  I tried the same features on a laptop HP with Windows 7 without all these questions.

  Thanks RTierra

  I have found a more permanent solution. At the command prompt, type Diskpart

  type

  automount

  If the answer says disabled, type

  automount enable

  Once I did, my USB keys have been recognized automatically when it is plugged.

  Why the setting has been disabled? who knows.

  I hope this helps others.

• 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

• My usb ports are not recognized usb storage damage

  Original title: why is my labtop port shows usb not recognized by vista home basic even though it shows a device installed and ready to use software?

  My usb ports are not recognized usb storage damage

  Hello

  · Do you think any yellow exclamation point inDevice Manager under USB devices?

  Windows vista contains several troubleshooting programs can automatically fix some common problems with your computer. One of them is the hardware and peripheral troubleshooting tool. I suggest you to run the troubleshooter as the first step in troubleshooting.

  Method 1:

  Tips for solving problems of USB devices

  http://Windows.Microsoft.com/en-us/Windows-Vista/tips-for-solving-problems-with-USB-devices

  Method 2: Remove and reinstall USB controllers

  a. Click Start; in the start search type devmgmt.msc and press ENTER.

  b. expand Bus USB controllers.

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

  d. restart the computer, and then Windows will reinstall the USB controllers.

  e. plug the removable USB storage device and test to make sure that

• The mistake that the USB device is not recognized... Help, please...

  I am trying to connect to Simple external storage drive and once I followed all the steps (only 2) Windows XP gave me a message that the USB device is not recognized or it malfunctioned. I disconnected everything and tried again in another USB port and still had the same error. I know that is not the usb port of my computer because I have it plugged into a port that just worked. I have Windowx XP SP2. Any help on this would be appreciated.

  XP forums:

  http://social.answers.Microsoft.com/forums/en-us/category/WindowsXP

  Link above is for XP Forums.

  There is a list of the different Forums XP to the link above to help you.

  You get the help you need there.

  Here is the Vista Forums.

  See you soon

  Mick Murphy - Microsoft partner

• I get message "USB device not recognized", but two USB devices are actually works very well. Poster sometimes Device Manager 'unknown device', then it will disappear and reappear.

  Poster sometimes Device Manager 'unknown device', then it will disappear and reappear with the error message.  Sometimes, I see the message even when there is nothing in the USB port.

  Hi malsnano,

  I see that usb devices do not work on xp. I'll help you with this problem.

  1. What is the brand and model of the computer?

  2. what security software is installed on the computer?

  3. have you made changes on the computer recently?

  4 is the issue limited to these usb devices?

  Method 1:

  Run the fixit from Microsoft Fixit article and if that helps.

  Hardware devices do not work or are not detected in Windows:

  http://support.Microsoft.com/mats/hardware_device_problems/en-us

  M odes 2:

  Put the computer in a clean boot state, then check if that helps.

  How to solve the problem by performing a clean boot state:
  http://support.Microsoft.com/kb/929135

  Note: Once you have completed troubleshooting, perform the steps in step 3: to reset the computer as usual.

  Method 3.

  Run a full scan of the computer with the Microsoft Safety Scanner to make sure that the computer is virus-free.

  Microsoft safety scanner: http://www.microsoft.com/security/scanner/en-us/default.aspx

  Warning of Security Scanner: there could be a loss of data while performing an analysis using the Microsoft safety scanner to eliminate viruses as appropriate.

  Method 4.

  You can disconnect all USB devices and then perform the following steps:

  1. click on start and then click Control Panel.
  2. click on system and Maintenance, click System, and then click Device Manager.
  Note that if control panel is in Classic view, double-click System and then click on Device Manager.
  If you are prompted for an administrator password or a confirmation, type the password, or click on allow.
  3. in Device Manager, double-click to expand the "USB Bus controllers", right click on the controller host, click "Uninstall" and click "OK".
  Check that if at all, there is an exclamation point on the pilot, it suggests problems with the installed driver.
  4. Repeat step 2 to uninstall all items under 'USB Bus controllers'.
  Then, restart the computer and Windows XP will automatically reinstall all USB controllers.

  Let us know if you need assistance with any windows problem. We will be happy to help you.

• USB 2.0 devices are not recognized on Satellite L

  Hello

  All of the usb 2.0 device is not recognized on my laptop.
  I got a message stating that the driver are not installed. I'm looking for the driver on the support site, but could not find them...
  I've updated the bios and chip set utility, but still nothing.

  Any idea?

  Hello

  What model of laptop do you have?
  What operating system do you use?
  Since when you noticed this problem?
  Did you test all USB ports?

  Have you tested with different devices USB ports?

  Please post a little more information.

• removable usb device is not recognized by windows

  my camera and GE multi card reader no longer recognized by windows.   in the Device Manager is no longer visible. I plug it into the computer and nothing, no sound connection and no autoplay more. This is due to an update. also install adobe air appears as damaged when starting computer installation. all I want to do is load the holiday pictures to my laptop as I have always. but now nothing. all ideas

  Hello

  1. What is the brand and model of your computer?
  2. What is the version of Windows installed on your computer? For example, Windows 7, Windows Vista.
  3. this happens with all USB devices?

  4. have you done any software or hardware changes on your computer before this problem?

  You can run the fixit mentioned in the following link.

  Method 1:

  Hardware devices do not work or are not detected in Windows
  http://support.Microsoft.com/mats/hardware_device_problems/en-us

  Method 2:

  I suggest you to update the chipset drivers and other drivers on the manufacturer's Web site.

  In addition, you can search the hardware changes in Device Manager and check if it helps.

  In addition, I would ask you to answer these questions and add additional information so that we can guide you in the right direction.

• The sounds coming from USB device are not its good

  Original title: the sound is bad.

  It is solid, but it is bad. Difficult to understand. Vista is my system. Its USB port

  Hello

  1. what exactly is the problem you face?

  2. that you get sound when you connect USB devices?

  3. Since when are you facing this problem?

  4. did you of recent changes to the system before the show?

  5. What does mean "it is solid, but it is bad. Difficult to understand. »

  6. What does mean "its USB port.

  Please provide more information on the issue to help you best.

  In addition, check out the link below and check if it helps.

  Tips for solving common audio problems

  http://Windows.Microsoft.com/en-us/Windows-Vista/tips-for-fixing-common-sound-problems

  Let us know if it helps.

• Windows update - USB devices are more recognized after installation

  I had to restart my laptop to install the updates. Once the update is completed, I had 'one of your disks should be checked for consistency. Finally, I uninstalled all recent updates and arrested "windows update". A question, I have (both after windows update installations but also uninstall the updates), is that my USB devices no longer work. There is no error message, it does not detect my mouse or my external hard drive. There is power that the external drive indicates the power and my pad colling runs, it just does nothing. Anyone able to help?

  Also, was not able to run chkdsk - nothing happens

  Have been able to solve this problem by creating an ERD and a running windows repair option. Everything works now.

• Some USB devices are more recognized when plugged after upgrading Fusion 7

  After reclassification of the merger of 6 to 7, some USB devices, specifically webcams is faster to connect to Windows (guest) or Host (osx).

  They also no longer appear in the USB & Bluetooth under the Virtual Machine settings.  Anyone else see this problem?  Try to understand this point, I completely uninstalled merger to try to solve this problem.  Webcams work fine under OSX itself and are usable.

  7 merger supports a virtual USB camera, that can be added as a new device in the virtual machine settings. This allows the physical camera (USB or integrated PCIe FaceTime HD) to share between the host and the VM at the same time.

  There is currently no option in the settings of the VM to UN-hide USB cameras for passthrough to the virtual machine, but it can be done with a preference.

  Edit the ~/Library/Preferences/VMware\ Fusion/preferences file and add the following line:

  vusbcamera. PassThrough = 'TRUE '.

• My usb device is not recognized / malfunctions since flashing the bios.

  I have a Canon EOS Digital Rebel Xt, and since I flashed the BIOS I get a message saying that the USB device has malfunctioned.  I reinstalled all Canon software and drivers, disabled/uninstalled all... so frustrated USB hubs... anyone?

  Hello

  Thanks for asking!

   

  You may not use the Canon and get message that peripheral USB has malfunctioned.

  What is the brand and model of the computer?

  As you have flashed the BIOS, I suggest you to contact the computer manufacturer for help with this issue.

  If you need assistance or if you have problems of Windows in the future, let us know and we would be happy to help you.

• the USB device is not recognized

  Hello

  I have a problem with one of the USB device and I don't know what to do!
  I use Sony laptop, Windows 7!
  I was using the front USB and it worked!
  Help!

  This mystery USB device works when plugged into another computer?  Then the camera seems not to have or may be damaged.

• devices are not recognized

  I have a 4th generation Ipod Touch and an IPhone 4 s, and no device is recognized by my ITunes. My laptop (Windows) however recognized devices and will allow the synchronisation etc. photo.

  Anyone know what is happening and how to fix it? Thank you.

  Try the following:

  1. Open Control Panel > Device Manager
  2. Plug in your device
  3. Locate Bus USB Controllers > Apple Mobile Device USB Driver.
     It is also possible that the device may appear under imaging devices, portable devices or other devices or as a device USB of MTB.
  4. Right-click and select software update of the driver...
  5. Click Browse my computer for driver software
  6. Go to C:\Program Files\Common Apple Mobile Device Support\Drivers or
     C:\Program Files (x 86) \Common Files\Apple\Mobile Device Support\Drivers
  7. Click on let me pick from a list of drivers for devices on my computer
  8. Click on Apple Mobile Device USB Driver
  9. Click Next, then close and exit the Device Manager

  Or try If iTunes does not your iPad, iPhone or iPod - Apple Support.

  If not try a complete tear down and rebuild iTunes in accordance with the resolution of the problems with iTunes for Windows updates.

  TT2