USB Device Not Recognized in Windows 10 & 11

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Last updated: August 23, 2026

If Windows displays “USB device not recognized," your computer has detected a problem with the connected USB device, USB port, cable, driver, or Windows configuration.

The problem can affect many types of USB hardware, including USB flash drives, external hard drives, keyboards, mice, printers, USB speakers, headphones, phones, and USB-C devices.

The good news is that a USB detection problem does not always mean the device has failed. A damaged cable, faulty USB port, outdated or corrupted driver, power-management setting, or Windows system problem can prevent a working device from being detected.

This guide shows you 15 ways to fix "USB device not recognized" errors in Windows 10 and Windows 11. Start with the simple hardware checks and move toward the more advanced solutions.

Important: If the USB device contains important files, do not format it or use repair commands until you have considered data recovery. Formatting can erase the data on the drive.

Windows 11 showing a USB device not recognized error

Table of Contents

What Causes the “USB Device Not Recognized” Error?

Windows may fail to recognize a USB device for several reasons.

  • A damaged USB cable
  • A faulty USB port
  • A loose connection
  • A malfunctioning USB device
  • Corrupted or outdated drivers
  • USB controller problems
  • Power-management settings
  • Windows system-file corruption
  • File-system errors on a USB storage device
  • A drive without a usable drive letter
  • Hardware failure

The first step is to determine whether the problem is caused by the USB device, the USB port, or Windows.

1. Check the USB Cable and Connection

Start with the simplest possible cause.

If you are using an external hard drive, SSD, phone, printer, or other USB device with a removable cable, inspect the cable for:

  • Cuts or visible damage
  • Bent connectors
  • Loose connections
  • Frayed sections
  • A connector that does not fit securely

Disconnect the USB device and reconnect it firmly.

If the device uses a separate USB cable, try another compatible cable.

For USB-C devices, make sure the cable and port support the functions required by the device.

2. Try Another USB Port

A faulty USB port can make Windows appear to have a problem with the device.

Try another USB port on your computer.

If you are using a desktop PC:

  • Try a USB port on the back of the computer.
  • Try another USB port on the front.
  • If possible, avoid using a USB hub during testing.

If the device works in one port but not another, the original port may have a hardware or connection problem.

For USB-C devices, try another compatible USB-C port if your computer has one.

3. Test the USB Device on Another Computer

This is one of the fastest ways to identify the source of the problem.

Connect the USB device to another Windows computer.

If It Works on Another Computer

The USB device is probably working. The problem may be related to:

  • Your USB port
  • USB drivers
  • Windows configuration
  • Power management
  • Your computer's USB controller

If It Does Not Work on Another Computer

The USB device, cable, or enclosure may be faulty.

This test is especially useful for USB flash drives and external hard drives.

4. Restart Your Computer

A temporary Windows or USB controller problem can sometimes be cleared by a restart.

Disconnect the problematic USB device.

  1. Select Start.
  2. Select Power.
  3. Select Restart.
  4. After Windows starts, reconnect the USB device.

If the USB device is still not recognized, continue with the next solution.

5. Disconnect Other USB Devices

Disconnect unnecessary USB devices, including:

  • USB flash drives
  • External hard drives
  • USB hubs
  • Printers
  • Game controllers
  • Webcams
  • USB speakers
  • Card readers

Leave only the problematic device connected.

Restart Windows and test it again.

If the device now works, reconnect the other USB devices one at a time to identify which device may be causing the problem.

6. Check the USB Device in Device Manager

Device Manager can show whether Windows has detected the hardware but cannot load its driver correctly.

Windows Device Manager showing an unknown USB device

Windows 10 and Windows 11

  1. Right-click the Start button.
  2. Select Device Manager.
  3. Look for a device with a yellow warning icon.
  4. Expand Universal Serial Bus controllers.
  5. Also check Disk drives if you are troubleshooting a USB storage device.
  6. Look for Unknown device or another device with a warning symbol.

If you find the device:

  1. Right-click it.
  2. Select Properties.
  3. Check Device status.

Windows may display an error code that can help identify the problem.

7. Update the USB Device Driver

A corrupted or outdated driver can prevent Windows from communicating correctly with USB hardware.

To update the driver:

  1. Open Device Manager.
  2. Find the problematic USB device.
  3. Right-click it.
  4. Select Update driver.
  5. Select Search automatically for drivers.
  6. Follow the instructions shown by Windows.

If Windows cannot find a suitable driver, check the hardware manufacturer's official website.

Avoid downloading drivers from unknown third-party websites.

8. Uninstall and Reinstall the USB Device

If the driver is corrupted, reinstalling it can fix the problem.

  1. Open Device Manager.
  2. Find the affected USB device.
  3. Right-click it.
  4. Select Uninstall device.
  5. Confirm the removal.
  6. Restart your computer.

Windows will attempt to reinstall the driver after the restart.

9. Install Windows and Optional Driver Updates

An outdated Windows installation can cause hardware compatibility problems.

Windows 11

Go to:

Start → Settings → Windows Update → Advanced options → Optional updates

If driver updates are available:

  1. Select Optional updates.
  2. Expand the available driver updates.
  3. Select the relevant update.
  4. Select Download and install.
  5. Restart your computer.

Windows 10

Go to:

Start → Settings → Update & Security → Windows Update

Select Check for updates and install available updates.

10. Check USB Power Management Settings

Windows uses power-management features to reduce power consumption. On some systems, USB power-management settings can contribute to devices disconnecting or failing to remain available.

You can check the USB Root Hub settings in Device Manager.

  1. Open Device Manager.
  2. Expand Universal Serial Bus controllers.
  3. Right-click USB Root Hub or a similar USB hub entry.
  4. Select Properties.
  5. Open the Power Management tab if available.
  6. Look for Allow the computer to turn off this device to save power.
  7. If the problem appears to be related to USB power management, you can temporarily disable this option.
  8. Select OK.
  9. Restart Windows.

If changing this setting does not help, restore the original setting.

11. Reinstall USB Controllers

Windows uses USB controllers to communicate with USB devices.

If a USB controller or its driver has become corrupted, reinstalling the controller can help.

  1. Open Device Manager.
  2. Expand Universal Serial Bus controllers.
  3. Identify the USB controller or hub associated with the problem.
  4. Right-click the relevant device.
  5. Select Uninstall device.
  6. Confirm the uninstall.
  7. Restart your computer.

Windows will detect the hardware again and attempt to reinstall the required driver.

Warning: Do not randomly uninstall devices if you are unsure what they are. If you are using a USB keyboard or mouse, losing USB functionality temporarily can make troubleshooting more difficult.

12. Check the USB Drive in Disk Management

This solution is especially important when Windows detects a USB flash drive or external hard drive, but it does not appear in File Explorer.

Windows Disk Management showing a USB drive

Press:

Windows + X → Disk Management

Look for the USB drive in the list of disks.

If the Drive Appears Without a Drive Letter

It may not appear in File Explorer because Windows has not assigned a drive letter.

Right-click the volume and look for:

Change Drive Letter and Paths

If available, assign a drive letter and check File Explorer again.

If the Drive Appears as Unallocated

Do not immediately create a new volume if the drive contains important files.

Creating or formatting partitions can make data recovery more difficult.

If the Drive Does Not Appear in Disk Management

The problem may be related to:

  • The USB port
  • USB cable
  • USB enclosure
  • USB controller
  • Power supply
  • The drive itself

13. Repair Windows System Files with DISM and SFC

Windows system corruption can sometimes contribute to hardware and driver-related problems.

Administrator Command Prompt running DISM and SFC commands in Windows 11

Microsoft recommends running DISM first and then System File Checker (SFC) when repairing Windows system files.

Open Command Prompt as administrator and run the following:

DISM.exe /Online /Cleanup-image /Restorehealth

Wait for the operation to complete.

Then run:

sfc /scannow

  1. Wait until the verification reaches 100%.
  2. Restart your computer.
  3. Reconnect the USB device.

If Windows is experiencing broader startup or system-repair problems, you may also find our guide to fixing the Windows 10 Automatic Repair loop useful.

14. Check the USB Drive for File-System Errors

If Windows detects the USB drive but cannot read it correctly, the file system may be damaged.

Before using repair commands, make sure you identify the correct drive letter.

For example, if Windows assigns the USB drive the letter E:, you can run:

chkdsk E: /f

To run it:

  1. Open Command Prompt as an administrator.
  2. Type the command using the correct drive letter.
  3. Press Enter.
  4. Wait for the check to finish.

Important: Do not substitute another drive letter accidentally. Running disk commands against the wrong drive can cause data loss.

If the USB drive contains valuable files and appears to be physically failing, consider professional data recovery before repeatedly running repair commands.

15. Check for Hardware Failure

If none of the previous solutions work, the USB device or the computer's USB hardware may be failing.

Signs of possible hardware failure include:

  • The USB device fails on multiple computers.
  • The device disconnects repeatedly.
  • The drive becomes extremely slow.
  • The USB connector is physically damaged.
  • An external hard drive makes unusual sounds.
  • The device becomes unusually hot.
  • The drive appears and disappears from Disk Management.
  • Windows reports repeated hardware errors.

For an inexpensive USB flash drive with no important data, replacement may be more practical.

For an external hard drive or SSD containing important files, stop troubleshooting if the drive is showing physical failure symptoms and prioritize data recovery.

How to Fix an Unreadable USB Flash Drive

If Windows recognizes the USB flash drive but you cannot open it, do not immediately format the drive.

First try:

  1. A different USB port.
  2. Another computer.
  3. File Explorer.
  4. Disk Management.
  5. A different drive letter.
  6. File-system error checking.

If the data is important, make a backup or use professional data-recovery methods before formatting.

For additional recovery steps, see our guide on how to recover a USB drive.

How to Fix a USB External Hard Drive That Is Not Recognized

For an external hard drive, try these steps in order:

  1. Check the USB cable.
  2. Try another USB port.
  3. Connect the drive directly to the PC instead of through a USB hub.
  4. Test the drive on another computer.
  5. Check Device Manager.
  6. Check Disk Management.
  7. Reinstall the USB or storage driver.
  8. Check the drive for errors if Windows can access it.

If the drive makes unusual clicking or grinding sounds, repeatedly disconnects, or cannot be detected on multiple computers, treat the problem as a possible hardware failure.

You can also read our guide on repairing hard drive problems for additional storage troubleshooting information.

Should You Format a USB Drive That Is Not Recognized?

No—not as your first troubleshooting step.

Formatting is appropriate only when you have determined that the drive is usable and you no longer need the existing data, or you have already secured the data elsewhere.

Formatting can remove the existing file system and make your files inaccessible.

If the drive contains important photographs, documents, videos, or other files, do not format it simply because Windows displays an error.

How to Prevent USB Device Problems

You cannot prevent every USB hardware failure, but good USB habits can reduce avoidable problems.

Safely Eject USB Storage

When possible, use Windows' Safely Remove Hardware and Eject Media option before physically disconnecting USB storage.

This reduces the chance of removing a device while Windows is still writing data.

Protect USB Devices from Heat and Moisture

Keep USB flash drives and external drives away from excessive heat, water, and high humidity.

Avoid Unnecessary USB Hubs

If a device is experiencing detection or power problems, connect it directly to the computer for testing.

Keep Windows Updated

Windows Update can provide recommended hardware drivers and other updates.

Frequently Asked Questions

Why does Windows say “USB device not recognized”?

Windows may display this message when the USB device reports a problem or when Windows cannot communicate with it correctly because of a driver or hardware issue.

How do I fix an unreadable USB drive?

Try another USB port and computer first. Then check the drive in Disk Management and look for file-system errors. Avoid formatting the drive if you need the files stored on it.

Can a corrupted USB drive be fixed?

Sometimes. If the problem is caused by file-system corruption, Windows repair tools may help. If the flash memory, controller, cable, enclosure, or physical drive has failed, software repairs may not fix it.

If Windows files themselves are corrupted, see our guide on how to fix corrupted files in Windows 10 and 11.

How do I know if my USB drive is failing?

Warning signs include repeated disconnections, very slow performance, unusual noises from external hard drives, disappearing drives, physical damage, and failure on multiple computers.

Can a USB port stop working?

Yes. A USB port can become damaged or develop a hardware or connection problem. Testing the same USB device in another port is a quick way to check.

Why is my USB drive detected but not showing in File Explorer?

The drive may be detected by Windows but have no usable drive letter, partition, or file system. Check Disk Management to see how Windows identifies the drive.

Should I use CHKDSK on a USB drive?

CHKDSK can repair certain file-system problems, but use it carefully. Confirm the correct drive letter first and avoid repair commands if the drive contains critical data and appears to be physically failing.

Why does my USB device work on another computer?

If the device works elsewhere, the USB device itself is probably functional. The problem may be related to the USB port, driver, Windows configuration, USB controller, or power management on your computer.

Related Articles

More Windows Troubleshooting Guides

Final Troubleshooting Checklist

If your USB device is not recognized in Windows 10 or Windows 11, work through these steps in order:

  1. Check the cable.
  2. Try another USB port.
  3. Test the device on another computer.
  4. Restart Windows.
  5. Disconnect other USB devices.
  6. Check Device Manager.
  7. Update the device driver.
  8. Reinstall the device driver.
  9. Install Windows and optional driver updates.
  10. Check USB power-management settings.
  11. Reinstall USB controllers.
  12. Check Disk Management.
  13. Run DISM and SFC.
  14. Check the USB drive for file-system errors.
  15. Consider hardware failure and data recovery.

In many cases, the problem is caused by a bad connection, USB port, driver, or Windows configuration rather than a completely failed device. Start with the simple hardware tests before changing drivers or running repair commands.

If the USB device fails on multiple computers, especially when it contains important data, the safest approach is to stop experimenting with formatting and repair commands and investigate possible hardware failure or data recovery.

Computerdok Tip: If your USB device contains important files, prioritize data recovery before formatting or performing extensive repair operations.

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