Fix USB Not Recognized Windows 7 error


USB Not Recognized error is one of the most common errors on the Windows operating system, namely Windows 7, the cause of the error is mainly due to faulty hardware, incompatible software or some other problem. So in this article, Taimienphi.vn will guide you how to fix USB Not Recognized Windows 7 error.


On a clear day when you plug a USB drive into a Windows 7 computer to copy important data, and on the screen you get the USB Device Not Recognized error message. The following article Taimienphi.vn will introduce you some ways to fix USB Not Recognized Windows 7 errors.

Fix USB Not Recognized Windows 7 error

Readers can refer to some ways to fix USB Not Recognized Windows 7 below to fix errors.

Method 1: Restart the computer

In any case when an error occurs, the fastest and best solution to fix the error is to restart your computer. In the case of USB Not Recognized error on Windows 7 is no exception, try restarting your computer, the operating system will read everything from the beginning and check if the error is still there or not.

If the error persists, refer to some other ways to fix the error below.

Method 2: Reinstall the USB driver

The cause of the USB Not Recognized error Windows 7 may be due to the faulty or outdated USB driver. To fix the problem, it is best to reinstall the USB driver.

Step 1: Press Windows + R To open the Run command window, then type the command devmgmt.msc on that and press Enter.

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Step 2: At this point, the Device Manager window will appear, where you find and expand the item Universal Serial Bus controllers, and see if any yellow exclamation marks appear in front of devices Host Controller or not.

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If no device is found with yellow exclamation mark in the item Universal Serial Bus controllers, try checking in section Other devices.

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Step 3: Double click each device with the yellow exclamation icon. On the screen will display a new window, here you click Driver tab then click Uninstall.

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Step 4: Next tick the box Delete the driver software for this device then click OK, got it

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Step 5: Restart your computer and reconnect the USB and see if Microsoft detects and installs new drivers.

If multiple Host Controllers appear a yellow exclamation icon, repeat the same steps to fix the error.

Method 3: Disconnect all external devices

Sometimes having too many USB devices connected on the same computer can cause feedback issues, malfunction, and cause USB Not Recognized Windows 7 errors.

To fix this problem, the only way is to perform a clean boot of the computer. Follow the steps below:

Remove or disconnect all unnecessary drives and devices from your computer. Make sure your computer is turned off properly, then remove the drives and USB devices, memory cards from the card reader slot. Disconnect all unnecessary devices such as cameras, scanners, headsets, external hard drives, mice, keyboards, monitors connected, etc.

– If you are using a laptop:

Step 1: Turn off your computer and make sure you have disconnected all unnecessary external devices and connections.

Step 2: Unplug the power cord from the laptop, then remove the battery.

Step 3: Press and hold power button for about 15 seconds to ensure all remaining power is discharged on the memory protection capacitors.

Step 4: Replace the battery and connect the power cord to the laptop, but do not connect any external devices to the laptop at this time.

Step 5: Press and hold power button To reopen the computer, then try reconnecting each USB device one by one to see if the error persists.

– If using a computer:

Step 1: Turn off the computer properly and unplug the power cord on the back of the computer.

Step 2: Press and hold power button in about 5 seconds.

Step 3: Reconnect the power cord and turn on the computer again, then try connecting each USB device again to see if the error persists.

Method 4: Scan and update the hardware driver

By scanning and checking your hardware driver to see if there are any changes, or if you need to update your hardware driver to fix USB Not Recognized Windows 7 error.

Step 1: Import device manager Click the Search box in the Start Menu of Windows 7 to open the Device Manager window.

Step 2: Here you find and click Disk Drives. Right-clicking on the USB drive driver is the cause of the error, select Uninstall.

Step 3: After the process is finished, click Action =>Scan for hardware changes to reinstall the driver.

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Next open Control Panel, then find and click Printers and Devices.

If you see an Unidentified device with a red question mark or exclamation mark, right-click and select Update Driver.

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Method 5: Activate the USB port and turn off Power Saving

On the Device Manager window, find the item USB Root Hub Properties and uncheck the box next to the option Allow the computer to turn off this device to save power.

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Method 6: Create an INF file

Step 1: Access the directory C: Windows inf and check if the directory contains all the files listed below:

usb.inf, usb2.inf, usbport.inf, usbprint.inf, usbstor.inf, usbvideo.inf

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Step 2: If one of the above files is missing, your task is to create the above. Or the best way is to copy the above files from another computer.

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The article above Taimienphi.vn has just guided you a number of ways fix USB Not Recognized Windows 7 error. If you have any questions or questions, you can leave your comments in the comment section below the article.

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