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This article provides methods to solve the USB Device not recognized error that occurs when you try to lớn access a USB external hard drive.

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When you try khổng lồ access data on an external USB hard drive, you may receive the following error:

USB Device not recognized: One of the devices attached to this computer has malfunctioned & windows does not recognize it.

Applies to: Windows 10, version 1709, Windows 7 Service Pack 1Original KB number: 2654149


This issue can be caused if any of the following situations exist:

The currently loaded USB driver has become unstable or corrupt.Your PC requires an update for issues that may conflict with a USB external hard drive and Windows.Windows may be missing other important updates hardware or software issues.Your USB controllers may have become unstable or corrupt.Your external drive may be entering selective suspend.Your PC motherboard may need updated drivers.

Resolution 1 - Uninstall và then reconnect the external hard drive

This method resolves issues where the currently loaded USB driver has become unstable or corrupt.

Select Start, type Device Manager in the Search box.Select Device Manager from the returned list.Select Disk Drives from the các mục of hardware.Press and hold (or right-click) the USB external hard drive with the issue, và select Uninstall.After the hard drive is uninstalled, unplug the USB cable.Wait for 1 minute and then reconnect the USB cable. The driver should automatically load.Check for the USB drive in Windows Explorer.


Connecting your USB external hard drive into a non-powered USB hub can cause a lack of enough power khổng lồ operate the external drive. Instead, plug it directly into your computer.

If this method does not solve your issue, proceed khổng lồ resolution 2.

Resolution 2 - Install hotfixes that resolve issues that may exist on Windows 7

The hotfixes in this method can resolve a known conflict with a USB external hard drive & Windows.

Under Update information, select Download the update package now that corresponds with your version of Windows 7.

If you"re unsure of which version of Windows 7 you are running, select the Start button, press và hold (or right-click) Computer > Properties.If 64-bit Operating System is listed next to lớn System type, you"re running the 64-bit version of Windows 7.If 32-bit Operating System is listed next to System type, you"re running the 32-bit (x86) version of Windows 7.

Select Continue. If a User account Control permission prompt occurs, select Yes.

Select Download > Open.

The tải về should start in 30 seconds. If it does not, select Start Download > Open.

Follow the onscreen instructions to complete the download and installation.

Select View và request hotfix downloads > Select hotfix.

If prompted, review the license agreement. If you agree to the terms, select I Accept.

Check the box next to lớn your version of Windows 7, then enter your thư điện tử in the boxes below.

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Enter the word verification, then select Request hotfix.

Check your email. You will soon see an e-mail from with a download link for the hotfix. Select the links and follow the onscreen instructions to download and install the hotfix.

Restart your computer.

If your problem still persists, proceed khổng lồ resolution 3.

Resolution 3 - Install the latest Windows Updates

This method will install the latest device drivers for your USB external hard drive.

Select the Start button, type Windows Update in the Search box, & then select Windows Update in the results pane.Select Check for Updates. After the scan is complete, select Review optional updates.Select the check box next to lớn the updates, then select Install updates.If prompted, đánh giá the license agreement, then select I Accept.Follow the onscreen instructions to tải về and install the updates.If prompted, reboot your computer.

If your problem still exits, proceed khổng lồ resolution 4.

Resolution 4 - Reinstall USB controllers

This method resolves steps where the currently loaded USB driver has become unstable or corrupted.

Select Start, then type device manager in the Search box, & then select Device Manager.Expand Universal Serial Bus controllers. Press và hold (or right-click) a device & select Uninstall. Repeat for each device.Once complete, restart your computer. Your USB controllers will automatically install.

If your problem still exists, proceed lớn resolution 5.

Resolution 5 - Disable USB selective suspend setting

This method prevents your USB external drive from powering down.

Select the Start button, type power plan in the Search box, & then select Choose a nguồn plan.Next to your currently selected plan, select Change Plan Settings.Select Change advanced power nguồn settings.Select the box khổng lồ expand USB Settings > USB selective suspend settings.Select Plugged in, select the drop-down menu, and then select disabled.If you"re using a laptop, select Battery, select the drop-down menu, and then select disabled.Select Apply > OK.

If this doesn"t resolve your issue, proceed to resolution 6.

Resolution 6 - Install your motherboard"s latest chipset drivers

This method updates your motherboard"s chipset drivers, so your computer will recognize your USB external hard drive.

Review your computer"s documentation that should contain the name of the motherboard manufacturer.Navigate their website to lớn find the appropriate drivers for your motherboard. For assistance, liên hệ your computer manufacturer.

If your issue still exists, we recommend contacting sản phẩm support.