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USB device is not recognized by my computer. - Computers & Internet

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Try this, unplug the computer

While it is unplugged press the power buttom on the computer and hold it in for about 20 seconds.

Plug it back in and turn on then try again

Posted on Jan 25, 2009

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Posted on Jan 02, 2017

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How To Fix Usb Device Not Recognized in Windows


Sometimes, when you plug a USB device to your computer you may receive a Usb Device not recognized or usb port not working pop up message. If your USB device is not detected, then we will show you how you can troubleshoot usb not recognized error.

Follow Quick Steps To Resolve Usb Not Recognized Error Windows:

Press "Windows" + "R",a run window will open
In the "Open" box of the run window type "devmgmt.msc" and press "Enter"
This will open theDevice manager
Click on the arrow besides "Universal Serial Bus controllers"
Right click on each USB port and then click on "Uninstall"
Restart your computer and wait for Windows to re-installs USB controllers.
Try to connect yourUSB deviceagain.
How To Fix Usb Device Not Recognized In Windows 7 8 1

on Jan 28, 2015 | Computers & Internet

1 Answer

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

1 Answer

Usb device not recognized, usb device malfunction windows does not recognize it


Connect it to a different computer, to see if the USB port on your computer was the problem, or if the USB device itself is the problem.

Dec 25, 2009 | Verbatim External, USB 2.0, 750GB...

1 Answer

Usb device not recognize


You mentioned that you uninstalled the unknown device from the Device manager. If you uninstall it then connected your usb flash drive you will see an error again on your device manager. This means that the driver for your usb port is not properly installed.

To install it, visit dell website, look for the model of your machine and locate the driver, download it then install from your machine.

Jun 02, 2009 | Dell Inspiron 6400 Notebook

2 Answers

USB device not recognized


This solution worked for me when I got the USB device not recognized message:
http://www.infobarrel.com/USB_Port_Repair
It can be quite frustrating. I've heard that older computers are more likely to have the USB device not recognized message.

May 31, 2009 | Dell Inspiron 6400 Notebook

1 Answer

My computer not recognized the USB Flash memory, but it recognized other device like the mouse, webcam scanner, digital camera ... Thanks for your help


if usb flash memory is working on other computer/laptop then do the following step.

Insert the usb flash memory.
Goto desktop, right-click my Computer, click Properties, click on Harware tab, click Device Manager button.

There should be yellow exclamation(!) sign showing Unknown Device
Right-click and select UnInstall.

Reboot your laptop
Insert the usb flash memory.

It should work.

May 30, 2009 | Dell Inspiron 6400 Notebook

1 Answer

My computer dont recognized my mp3 m-230 what can i do ???


mostly, mp3 devices comes with a software.

if u have the software, and the usb dont recognize your mp3 device. most probably the problem is in you usb drive or usb connector.

Feb 27, 2009 | SanDisk Sansa m230 MP3 Player

1 Answer

Computer doesn't recognize usb device...


do not use Front usb connector. put your device in backside of CPU usb port. it wil work fine.

Mar 05, 2008 | Belkin BLKF5U201 USB Peripheral...

1 Answer

USB Drive


Make sure you are matching the compatibility of USB 1.1 and USB 2.0 between the devices (computer and USB devices).

USB 1.1 device will work in USB 1.1 and USB 2.0, but USB 2.0 devices will not work in USB 1.1 plug in the computer.

How many USB ports do you have in the computer? Which ones have you tried other pen drives in? List the USB ratings for each device and port in the computer to further help.

Have the other USB devices been formatted with other computers? The formatting on other systems might not be compatible.

Nov 21, 2007 | Microsoft Windows Vista Ultimate Edition

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