How to fix usb device not recognized error in windows 7/ 8

One of the common problems with Windows Vista and Windows 7 (which used to be an issue in XP before the service pack 3 release), is the annoying  “USB Device Not Recognized” error message popping up on the desktop taskbar. See example of the error below:


USB Device Not RecognizedOne of the USB devices attached lớn this computer has malfunctioned, và Windows does not recognize it. For assistance in solving this problem, clichồng this message.

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Looking at Windows Device Manager, you might also notice the “Unknown Device” under Universal Serial Bus Controllers:


This error message can sometimes be classified as a “false positive”, as it can appear intermittently in Windows & then disappear without any effect on your actual USB devices.

Common Solutions to lớn Fixing USB Device Not Recognized Errors

First thing you should vày is update your USB drivers to the lathử nghiệm version from your motherboard manufacturer. This usually fixes the problem for most users. You can either search the manufacturer’s website & download/install the current driver, or you can run a recommended driver update program.

I personally use DriverFinder & it’s known to be great at matching and updating USB và audio/video drivers.

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After ensuring your drivers are updated, try the following solutions (in order):

1. Unplug your computer. Don’t just turn it off with the power button, you need to actually unplug the cable from the power supply for at least 1 minute. This often resets your USB hub on your motherboard.

2. Remove the battery. If you computer is a laptop, remove sầu the battery for at least 2-3 minutes before plugging it baông chồng in và restarting Windows

3. Uninstalling root hub drivers. If steps 1 và 2 above sầu vì chưng not work, try the following:

Unplug all USB devices from your computer.Go to Device Manager in Windows 7 or Vista.

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Uninstall EACH Root Hub USB Driver.nguồn off your computer and UNPLUG THE CABLE FROM THE POWER SUPPLY, just don’t shut it down.Reconnect the power supply cable and turn your computer on after 2-3 minutes.Reconnect each external USB device. (i.e. mouse, keyboard, thumb drive, etc.)

4. If you still have issues and cannot get rid of “USB device not recognized” error messages you can try disabling USB 2.0 devices which should remove the error message và “fix” the problem (although it’s more of a bvà aid then an actual solution) but your USB devices will now run at the slower USB 1.1 tốc độ.