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How to fix ?USB device not recognized? error in windows

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!



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”.
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!



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i have a Trendnet TK-209 KVM switch. My keyboard and mouse (MS wireless) that worked well for a year stopped working through the switch. they work well if connected directly to each computer.


I can confirm the same problem happened with me just now. I have TrendNet USB/KVM TK-207 and was flawlessly working with Logitech K260 Wireless Mouse and Keyboard Combo, but today on both computers all I can see is the error:

.
USB Device not recognized - The last USB device you connected to this computer malfunctioned and Windows does not recognize it.

I unplugged the usb wireless adapter and connected it directly to the PC - it worked like a charm again. I have tried to connect the wireless adapter to the mouse port hoping that the keyboard USB port is causing problems, but all I got was the same error. I have tried to conect a normal USB keyboard, but again the same error I get for both - the mouse and keyboard, so it is more than obvious now that the USB ports of my KVN Switch are malfunctioning. I will try to leave it for a while if it got hot somehow as it was connected for more than 6 months working perfectly fine, but if not, I am heading to the store for support/replacement.

May 02, 2011 | Trendware TK-207K 2-port USB KVM Switch

3 Answers

Dear Sir, When i inserted by Pen drive in my laptop it shows a message " USB Not Recognized" & then i tried the same in various PC's & Laptops but the same message has come. What shall I Do? this Means that i lost the data's in my pen drive or is there any option to repair it? Pls kindly advice me.


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!

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".

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 pesky "USB device not recognized" Windows error!

Mar 06, 2011 | Transcend 4GB JetFlash 110 USB 2.0 Flash...

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

Windows Not Recognizing Device


Insert your operating system disc in to your cd/dvd rom drive, then go to my computer properties, now go to device manager and right click on keyboard or mouse what you want, now re-install your device from your cd/dvd rom, and restart your system.

Jun 04, 2010 | Logitech Wireless Access Duo Optical...

2 Answers

USB port problems


Try going into the BIOS and see if the USB Ports are enabled. I don't know what type of system you have. When you turn on the pc it will prompt 'F1 to enter setup' or it might be F10. Do you have a USB mouse or keyboard? Try those in different ports.

Jun 12, 2007 | ASUS EXTERNAL USB FLOPPY DRIVE (ASUUSBFDD)...

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