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My iphone shut down when connect o my computer. i get a error message unknown device not recognize usb

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The possible explanation to this issue would be than the usb port is very old or damaged and it doesnt recognize the ipod usb cable
you should try to update the usb drivers or buy an new usb interface car if you have a desktop

Posted on Mar 19, 2011

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I have a Craig mp4 .. but I'm trying to use it but i do not how .. because when i connect it to the computer it is not recognized by the computer please help me


Hi, Are you getting a "USB device not recognized" error whenever you plug in a USB mouse, keyboard, or other USB device? I love USB and have 5 ports on my computer so that I can connect my mouse, keyboard, camera, phone, and printer to it all at once!

However, last weekend, my computer stopped recognizing my USB devices! The strange thing about it was that the USB ports were not bad because all of my devices were still getting power to them. I could still charge my cell phone without a problem!

usb device not recognized

So I started with the normal fixing methods, including uninstalling the drivers for my devices and reinstalling them. That didn't work! Next I tried System Restore thinking that maybe I had installed something and it caused a conflict with the USB system drivers. That didn't work!

I read online that in order to fix this problem I should go to Device Manager and uninstall all of the devices under USB Controllers. Restarted the computer, reinstalled the USB drivers, but the problem STILL did not go away!

You may also see in Device Manager that the device shows up as an "Unknown Device".

unknown usb device

So how did I finally fix the problem? Well, apparently it's a super simple solution! No need to edit the registry, uninstall drivers, or anything of that sort.

Simply UNPLUG YOUR COMPUTER FROM THE POWER SUPPLY. Yes that's it! Note that this does not mean just turning off your computer because modern computers don't really turn off when you press the power button as the motherboard still gets power.

First to explain, the motherboard is where all of hardware of the computer is connected to, including the USB ports. Sometimes the motherboard needs to be "rebooted" also because something can go wrong, i.e. all your USB ports suddenly stop working. The small microprocessor on the motherboard will reload the drivers and your USB ports should be back to recognizing all devices!

So first turn off your computer using Shut Down or pressing the power button and then UNPLUG it from the wall outlet. Let it sit for about a minute and then plug it back in.

Hope this helps someone fix that pesky "USB device not recognized" Windows error!


Have a nice day...

Mar 02, 2011 | Audio Players & Recorders

2 Answers

Usb ports not recognized


Did this suddenly start to occur? Were they working before? If so, it is very simple - shut down computer, remove the battery and unplug any power source, wait a couple of minutes and reassemble and power up. Wala! I read all kinds of complicated instructions, started with the simple, and problem solved.

Feb 22, 2010 | Computers & Internet

1 Answer

Vista does not recognize my powershot a85 cam .. The error it is giving out when i connect the usb cable is 'USB Device not recognized' . It does not display in the my computer box . any ideas ?


Hi,
Try this first turn off your computer using shut down or pressing the power button and then unplug it from the wall outlet. Let it sit for about 30 minutes and then plug it back in.
You will not be getting the message 'USB Device not recognized' .

Hope this helps .

Jan 31, 2010 | Canon PowerShot A85 Digital Camera

1 Answer

My pc doesn't recognize my verbatim 1000gb external hard drive, error "unknown device"


Did the 1000gb external hd come with instructions?
Did you read them?
Did you Install The Software for this Device?

If not. Try plugging it in all the usb ports.
Try shutting down the PC, when it's off plug in the 1000gb external HD,
Restart the Computer, If Windows still dosen't recognize it, then it's most likely defective, and should be returned. Try purchasing a higher quality brand.

Nov 20, 2009 | Verbatim VER95327 USB Hard Drive

4 Answers

My iphone 2g only shows the apple for 10 seconds then shuts down


Try restoring it...here's how...
  1. Disconnect the USB cable from the iPhone or iPod touch, but leave the other end of the cable connected to your computer's USB port.
  2. Power off the device (Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the the iPhone or iPod touch to turn off.
  3. Press and hold the Home button while reconnecting the USB cable to iPhone. When you reconnect the USB to iPhone, the device should then power on.

    Note: If you see the message "Charging... Please Wait" , let the device charge for at least 10 minutes to ensure the battery has some charge and then start with step 2 again.
  4. Continue holding the Home button while iPhone starts up. While starting up, you will see the Apple logo.
  5. When you see "Connect to iTunes" on the screen, you can release the Home button andiTuneswill display the recovery mode message:

    If you don't see the "Connect to iTunes" screen, then disconnect the USB cable from iPhone and repeat steps 3-6.
After this you'll need to jailbreak it too....

Sep 04, 2009 | Apple iPhone Smartphone

1 Answer

IPhone stuck on Startup logo


Reset the iPhone by holding the sleep/wake button at the top right of the device and the home button at the bottom center of the face at the same time. Hold them both until you see the screen go black and the white Apple logo appear. When this happens, you can let go - the iPhone is rebooting.

Resetting the iPhone should not remove or delete any data or settings.

Aug 08, 2009 | Apple iPhone Smartphone

1 Answer

When I plug in my Iphone computer shuts down


Unfortunately firmware updates and driver updates for IPhones can be fickled on Windows OS, try rollback the firmware/driver update and see if you are still getting the error. If not you may want to research if the IPhone site has a FAQ or Troubleshooting solution for this.

Mar 18, 2009 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

Windows not recognised


Press and hold the lower volume button and plug it in to the computer simultaneously and keep holding the minus button until a box appears where the message of usb device malfunctioned and click on it. Then follow the instructions and it should be recognized.

Jul 11, 2008 | SanDisk Sansa MP3 Player

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