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

2012-01-01T10:49:01+00:00

i had the same problem - traced it back toa personal media drive - replaced still same problem - with personal media drive out of chassis i had no alarms - i thought it might be a board or chassis - what it turned out to be was a dusty plug inside the computer - i cleaned it and i am back to being greatly relieved
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Anonymous

2011-12-31T16:29:36+00:00

i have the same problem on my hp computer - it just started all of a sudden - if you double click on unknown device it will bring up the driver specs - mine show that a device is not connected- it also shows that the bad port is port#0009 hub#0002 - however i am not sure where this port is - but it is linked to standard usb host controller - i updated driver from that menu - still no good - i uninstalled it and reinstalled it - still no good - i know the problem exits at port#0009 hub#0002 - i cant identify this port - whether it is one of my hubs i have installed or an internal connection - all my usb devices work - but the longer it alarms my computer crashers - any ideas how to find that port and hub
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Anonymous

2011-12-31T01:48:45+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.

i have never had a problem with this in the past - when i go to device manager all devices say they are working properly - i tried the power down issue with no results - i agree - this started happening after a vista update - i do not want to run the restore discs - too time consuming to reupdate and the issue would come back - i like the idea to check off do not report usb errors - that will get rid of the alarm and i know the issue still exists - but all my usb ports work with my hardware - someware alaong the road microsoft needs to put out a fix - before i do that i am going to run mr fixit for device hardware - thanks for the ideas
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