Thanks for sharing your vote !
Have a minute to tell us and other readers how this question helped you? We feature review like yours in our Recommended Review section.
Hello, Please let me know that how to fix “USB Device Not Recognized” error in windows 7, 10. I have no idea about that how to fix it. Help me.
You are trying hard to connect your USB device to your computer but you are unable to. Every time, you are plugging the USB into the port and it displays USB Device Not Recognized Error.
What to do next? The USB related errors are the most frustrating and difficult to fix. Yet not to worry, this guide helps you to deal and resolve the USB Device Not Recognized Error with simple and quick fixes.
One of the simplest and time-saving methods to detect USB devices is to unplug your computer from the power source. Turning off your computer doesn't only means that you just have to turn off the power button. This is because most of the modern computers do not shut down completely and their motherboard will still get power. Turning off the computer is only helpful when you want to remotely wake up a computer.
Sometimes, you have to reboot the motherboard because few functionalities go wrong or some USB ports suddenly stop working. By rebooting, the microprocessor on the motherboard starts reloading the drivers and the machine starts recognizing the USB devices again.
So, you can switch off your Windows computer using the Shut Down option or pressing the power button directly. Subsequently, unplug the PC from source and wait for some minutes before plugging it back again.
When Windows is unable to identify or detect the device, check whether the USB device is showing as an "Unknown Device" in Device Manager or not. To open the Device Manager, firstly click on the Start and typing in devmgmt.msc. Alternatively, go to the Control Panel and click on Device Manager.
If it's showing as an unknown device, right-click on Unknown Device and check Properties. Under the Driver tab, click Update Driver option.
Moreover, you can even download the driver for your device from the manufacturer’s website. If the USB device is a pen drive then it is not a driver issue. However, if it's a USB printer, drawing pad, then you need to download the driver for that specific device.
If the above methods don't work, the next thing is to remove all the USB devices and restart your machine/computer. Once the computer is restarted, try connecting the USB device causing problem earlier.
If a particular device gives USB Device Not Recognized Error, then try another USB device. If a device is not working with a port, then there can be a hardware problem with the USB port. If none of the USB ports is working or recognizing the device, then there is some kind of problem with the complete hardware.
Unfortunately, if no above method works, launch Device Manager and expand USB Serial Bus Controllers. Further, right-click on the USB Root Hub and then select Properties. Under this, click on the Power Management tab and disable the "Allow the computer to turn off this device to save power" function. Subsequently, repeat the same steps with all the USB Root Hub listed.
Once all are done, restart your computer. Finally, you can try reconnecting the USB device and check if it is recognized or not. If not, then go to the power management tab again and for each one and check the box again. Leave them unchecked if the device gets recognized.
Some people use USB port hub to connect their multiple USB devices to the computer. This is also one of the reasons causing USB Device Not Recognized Error. Like, there are hub which are capable to connect up to 8 USB devices to the computer simultaneously. In such a case, remove the USB hub and connect the device directly to the computer.
The other solution is to reduce the number of USB devices connected to the hub controller. Another solution is to buy a new USB hub with more power.
If no above method worked so far, then you can download the Windows USB Troubleshooter Fixit tool. It is basically a free tool that is compatible with Windows XP, Vista and 7. The troubleshooter either fixes the USB connection problems itself or you can do it manually.