Windows Vista USB Device Not Recognized

Anonymous

I have tried all of the suggestions to fix this problem. What else is there to do. Right now I am running the systm scan throught the command prompt. The last thing I had plugged into my computer before the USB error messsage appeared was my iPod. I have never had any other USB problems besides this one. I have a Toshila A135-S2326 that came with Windows Vista Home Basic already installed. I have the lastest update and BIOS version. I have reset the BIOS to the default seeting and changed the time. I have disconnected the computer from its' source along with the battery. I have disabled all the USB ports restarted the computer, enabled them again. I have uninstalled all USB ports and let Windows reinstall them. I have done everything that I know to do and still nothing. I have read and searched for a solution time and again. Can someone PLEASE help me. I desperately need a solution like yesterday. Thank You!!!!!

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Anonymous

There is possibly an unbelievably simple solution to the “USB device not recognized ” error which worked for me. 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!

!\[\](http://www.online-tech-tips.com/wp-content/uploads/2008/07/usbdevicenotrecognized-thumb.png)

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 ”.

!\[\](http://www.online-tech-tips.com/wp-content/uploads/2008/07/unknownusbdevice-thumb.png)

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 highly irritating “USB device not recognized” Windows error!

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Anonymous

Try a System Restore to pick a Restore Point before your problem..

Click Start > Programs > Accessories > System Tools > System Restore > pick a different time > Next > etc

http://www.apple.com/support/ipod/

And also ask Apple iPod Support about their Product

http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/home.jsp

And download the latest USB Universal Serial Bus Controllers for your Model Laptop from toshiba.

Cheers.

Mick Murphy - Microsoft Partner

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95 additional answers

Anonymous

2010-11-17T05:11:10+00:00

This solution of turning off computer and unplugging does not work. There is a problem with Windows Vista recognizing USB devices and seems many people are having it. It has to be related to some Windows Vista update that came through as prior to that was never a problem with USB devices.
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Anonymous

2010-11-18T13:49:38+00:00

I gave up and sent my laptop to HP for repair. It cost $250 but at least it works. I think they put a new mother board in it.
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Anonymous

2010-11-18T15:09:16+00:00

Hi

Sorry to report this does not work on my MEDION laptop.

My issue has to do with 3 out of 4 USB ports did not recognize a logitech V450 Wireless Mouse. Logitec are blaming Medion, Medion are blaming logitech and I think they all blame Microsoft!!!.(VISTA Home )

The V450 only ever ran on the LH port Never on the RH 3 ports. I recently uninstalled a Phone Dongle software and lost the Mouse on the last port. HOWEVER another wireless mouse (Packard Bell) STILL works BUT only on the 1 (LH) port!!! Not the R-.

I thought I would try the "switch power off Fix" however in spite of removing power and battery holding the power button down for over a half minute. on booting up I still only have one port which will take the mouse and only the P-B mouse not the Logitec!.

I can charge phones, access Hard drives, cameras, and send SMS and load Music and photos to and from my Phone using all the ports. Just no use of the logitec mouse?

I show no errors on the USB sections in Hardware Manager, all port reporting Working ok

I have been asked to do a Factory Reset By MEDION But as this will involve re-loading virtually ALL data and third party software, I don't want to do it unless I am guaranteed a "Result".

Any Thoughts?

Pete
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