USB Device Not Recognized in Windows 11 and 10: How to Fix It

If Windows shows the message “USB device not recognized”, the problem may come from the USB device itself, the cable, the port, a driver, a power setting, or the way the drive appears in Windows.

This error can affect USB flash drives, external hard drives, phones, printers, keyboards, mice, and other USB devices. Sometimes reconnecting the device is enough. Other times, Windows keeps showing the same warning, or the USB drive does not appear in File Explorer.

In this guide, you will learn how to fix the USB device not recognized error in Windows 11 and Windows 10. Start with the quick checks first, then move to Disk Management, Device Manager, power settings, and advanced repair options if the problem continues.

Before You Start: Do Not Format the USB Drive Yet

If the USB device contains important files, do not format it unless you already have a backup.

When Windows does not recognize a USB drive, it may ask you to format the disk before using it. Avoid doing that too quickly, especially if the drive has files you need.

Before trying advanced fixes:

• Try another USB port.
• Test the USB device on another computer.
• Use another cable if it is an external hard drive, phone, or USB-C device.
• Do not initialize, format, or delete partitions if you need the files.
• If an external drive makes clicking noises or disconnects constantly, stop using it and consider data recovery options.

Once you have checked the basics, continue with the fixes below.

Why Windows Says “USB Device Not Recognized”

The USB device not recognized error usually means Windows detected a device connected to the USB port, but could not communicate with it correctly.

This can happen because of a temporary Windows glitch, a faulty USB port, a damaged cable, a USB hub, a corrupted driver, a power setting, or a problem with the USB device itself.

The right fix depends on what you see: the device may be completely undetected, appear as an unknown USB device in Device Manager, or show up in Disk Management but not in File Explorer.

1. Try Quick USB Fixes

Start with these simple checks before changing drivers or system settings.

1. Disconnect and reconnect the USB device. Unplug the device, wait a few seconds, and connect it again. If it is a USB storage device, avoid removing it while files are being copied.
2. Restart your computer. A restart can reload Windows services, USB controllers, and device drivers. After Windows starts again, reconnect the USB device.
3. Try another USB port. If you are using a desktop PC, try a rear USB port instead of a front port. Rear ports are usually connected directly to the motherboard and may be more stable.
4. Avoid USB hubs and adapters. Connect the device directly to the computer, especially if it is an external hard drive, card reader, or another device that needs more power.
5. Try another USB cable. This is important for external hard drives, phones, cameras, and USB-C devices. Some cables only charge devices and do not transfer data.
6. Test the USB device on another computer. If it works on another PC, the problem is likely related to your Windows installation, drivers, power settings, or USB ports. If it does not work anywhere, the USB device itself may be damaged.

2. Check If the USB Drive Appears in Disk Management

If your USB drive does not appear in File Explorer, it may still appear in Disk Management. This can happen when the drive has no letter assigned, has a damaged partition, or uses a file system Windows cannot read properly.

Use this step if the USB drive does not show up in This PC, Windows makes the connection sound but nothing appears, or an external hard drive is detected but not accessible. You can also check Microsoft’s guide to Disk Management in Windows if you need more details about this tool.

• To open Disk Management: Right-click the Start button and select Disk Management. Then, look for your USB drive in the lower section of the window.

Be careful here. Disk Management also shows your internal drives, recovery partitions, and system partitions.

If the USB drive appears without a drive letter

If the USB drive appears in Disk Management but does not have a letter such as D:, E:, or F:, assign one manually.

1. Right-click the USB volume and select Change Drive Letter and Paths.
2. Click Add and choose an available drive letter.
3. Click OK.

After that, open File Explorer and check if the USB drive appears under This PC.

If the USB drive appears as unallocated or not initialized

If the drive appears as Unallocated, Unknown, or Not Initialized, do not initialize or format it if you need the files.

These options can erase or overwrite important drive information. If the data matters, stop and consider recovery options first.

If the drive is empty or you do not need the data, you can create a new volume and format it. Only do this when you are sure there is nothing important on the device.

3. Check Device Manager for an Unknown USB Device

If Windows shows USB device not recognized, the device may appear in Device Manager as an unknown device, a USB Mass Storage Device, or an entry with a yellow warning icon.

To check it: Right-click the Start button, select Device Manager and expand these sections: Universal Serial Bus controllers, Disk drives, Portable Devices, Other devices.

Look for entries such as Unknown USB Device, Unknown Device, USB Mass Storage Device, Device Descriptor Request Failed, or any device with a yellow warning icon.

If you find one, continue with the next step to uninstall and reinstall the device driver.

4. Reinstall the USB Device Driver

A corrupted driver can cause Windows to stop recognizing a USB device. Reinstalling the device can force Windows to detect it again. Microsoft also explains how to update drivers through Device Manager if you want to review the official driver options.

Before changing drivers or USB controllers, you may want to create a restore point.

1. Open Device Manager.
2. Find the problematic USB device, right-click it and select Uninstall device, and confirm the action.
3. Disconnect the USB device and restart your computer.
4. Then, connect the USB device again.

Windows should try to install the driver again automatically.

Choose the entry that matches how the device appears in Device Manager. If it appears under Disk drives, uninstall it from there. If it appears as Unknown USB Device under Universal Serial Bus controllers, uninstall that entry instead.

If Windows does not reinstall the device automatically, scan for hardware changes:

1. Open Device Manager.
2. Click your computer name at the top of the device list.
3. Click Action in the menu bar and select Scan for hardware changes.
4. Wait for Windows to detect connected devices again.

After the scan, check if the USB device appears normally.

5. Reinstall the USB Controllers

If only one USB device is not recognized, the problem may be with that device. But if several USB devices fail, the USB controller driver may be the issue.

To reinstall USB controllers:

1. Right-click the Start button and select Device Manager.
2. Expand Universal Serial Bus controllers.
3. Right-click a USB controller, USB Root Hub, or Generic USB Hub entry.
4. Select Uninstall device.
5. Repeat this for other USB controller entries if needed.
6. Restart your computer.

Windows should reinstall the USB controllers after the restart. Then reconnect the USB device and check if Windows recognizes it.

Be careful if you are using a USB keyboard or mouse. They may stop responding during the process. If that happens, restart the computer using the power button, or use the built-in keyboard or touchpad if it is a laptop.

6. Check USB Power Settings

Windows can turn off USB devices to save power. This is useful on laptops, but it can sometimes cause USB devices to disconnect, stop responding, or fail to wake up correctly.

Turn off USB power saving in Device Manager

1. Open Device Manager.
2. Expand Universal Serial Bus controllers.
3. Right-click USB Root Hub or Generic USB Hub and select Properties.
4. Open the Power Management tab.
5. Uncheck Allow the computer to turn off this device to save power and click OK.

Repeat the same process for other USB Root Hub or Generic USB Hub entries.

If the Power Management tab does not appear for a specific entry, skip it and move to the next one.

Disable USB Selective Suspend

USB Selective Suspend allows Windows to suspend USB devices when they are not being used. In some cases, the device may not wake up correctly.

1. Open the Start menu, search for Edit power plan and open it.
2. Click Change advanced power settings.
3. Expand USB settings.
4. Expand USB selective suspend setting.
5. Set it to Disabled.
6. If you are using a laptop, set both On battery and Plugged in to Disabled.
7. Click Apply and then OK.

Restart the computer and test the USB device again.

7. Update Windows and USB Drivers

Windows updates can include driver fixes, compatibility improvements, and patches for hardware-related issues.

To check for updates:

1. Open Settings, go to Windows Update and click Check for updates.
2. Install any available updates.
3. Restart your computer.

If you want more details about how updates work, check Microsoft’s Windows Update FAQ. On Windows 11, you can also go to Advanced options > Optional updates, where some driver updates may appear.

If Windows still does not recognize the USB device, check the manufacturer’s website for updated chipset, USB, BIOS, or motherboard drivers. This is especially useful if several USB ports are not working, the problem started after installing Windows, the laptop is missing manufacturer drivers, or USB-C ports and docking stations behave inconsistently.

Go to the support page for your laptop, motherboard, or desktop model and download the recommended drivers for your version of Windows. Avoid downloading drivers from random driver websites. Use the official manufacturer page whenever possible.

8. Check the USB Drive for Errors

Use this step only if the USB drive appears in File Explorer.

If Windows recognizes the drive but you cannot open files, copy data, or use it normally, the file system may have errors.

1. Open File Explorer and go to This PC.
2. Right-click the USB drive and select Properties.
3. Open the Tools tab.
4. Under Error checking, click Check.
5. Select Scan and repair drive if Windows offers that option.

Wait until the process finishes before removing the drive.

This option will not help if the USB device does not appear in File Explorer. In that case, use Disk Management and Device Manager first.

9. Repair Windows System Files

If USB devices still fail after trying the simpler fixes above, Windows system files may be damaged. You can use SFC and DISM to check and repair Windows files. For a full walkthrough, see our guide on how to fix corrupted Windows system files with SFC /scannow.

1. Right-click the Start button.
2. Select Terminal (Admin) or Windows PowerShell (Admin).
3. Run this command:
   sfc /scannow
4. Wait for the scan to finish.
5. Restart your computer.

If the problem continues, open Terminal (Admin) again and run this command:

DISM /Online /Cleanup-Image /RestoreHealth

When the process finishes, restart your computer and test the USB device again.

Specific USB Device Cases

The fixes above cover most USB recognition problems, but some devices need a few extra checks. Use the sections below if the problem involves an external hard drive, a USB flash drive, or a device that behaves differently on another computer.

If the USB Device Is an External Hard Drive

External hard drives can fail to appear because of power, cable, enclosure, or disk problems.

Try these checks:

• Use the original USB cable if possible.
• Connect the drive directly to the PC.
• Avoid unpowered USB hubs.
• If the drive has a power adapter, connect it.
• Try another USB port or cable.
• Check Disk Management to see if the drive appears without a letter.
• Listen for clicking, beeping, or repeated spin-up sounds.

If the external drive makes unusual sounds or disconnects repeatedly, avoid running repair tools over and over. If the files are important, stop using the drive and consider data recovery options.

If the USB Device Is a Flash Drive or Pen Drive

If Windows does not recognize a USB flash drive, first check whether the problem is with the drive or your PC.

Try another USB port, test the flash drive on another computer, and check Disk Management to see if it appears without a drive letter. Avoid formatting it if you need the files.

If the flash drive does not work on any computer, it may be damaged. If the files are important, avoid reconnecting it repeatedly and consider data recovery options.

If the USB Device Works on Another Computer

If the USB device works on another PC but not on yours, the device is probably not damaged. The problem is more likely related to your Windows installation, USB ports, drivers, or power settings.

Focus on the fixes that apply to your computer: try another USB port, reinstall the device in Device Manager, check USB power settings, and update Windows or your USB drivers.

If the USB Device Does Not Work on Any Computer

If the USB device is not recognized on any computer, the device itself may be damaged.

This can happen because of physical damage, a broken connector, internal storage failure, file system corruption, power problems in an external drive, or a damaged USB enclosure.

If there are no important files on the device, replacing it may be the easiest option. If it contains important files, avoid formatting it and consider data recovery options.

Should You Format the USB Drive?

Only format the USB drive if you do not need the files, already have a backup, and understand that formatting removes the existing data from the drive.

Do not format the drive just because Windows suggests it. If the USB drive contains important files, formatting should be a last resort.

How to Reduce USB Recognition Problems in the Future

You cannot prevent every USB issue, but these habits can reduce the risk:

• Use Safely Remove Hardware before disconnecting USB storage devices.
• Avoid removing a USB drive while files are being copied.
• Keep Windows and drivers updated.
• Use good quality USB cables.
• Avoid unstable USB hubs for external hard drives.
• Store flash drives away from heat, moisture, and physical pressure.
• Back up important files in more than one place.

USB drives can fail without warning. If the files matter, do not keep them only on one USB device. If you store sensitive files on a removable drive, you may also want to password protect a USB drive in Windows.

Final Thoughts

The USB device not recognized error in Windows 11 or Windows 10 can come from a simple connection problem, a faulty USB port, a damaged cable, a driver issue, a power setting, or a USB drive that appears in Disk Management but not in File Explorer.

Start with the quick checks first: reconnect the device, restart the computer, try another USB port, avoid hubs, and test the USB device on another PC. If the problem continues, move to Disk Management, Device Manager, USB power settings, Windows updates, and manufacturer drivers.

If the USB device contains important files, do not format it too quickly. First, confirm whether the problem is with the computer, the port, the cable, or the device itself.

FAQ

Why does Windows say USB device not recognized?

Windows shows the USB device not recognized message when it detects a connected USB device but cannot communicate with it correctly. This can happen because of a faulty cable, bad USB port, corrupted driver, power setting, or damaged USB device.

What should I do if my USB drive does not show up in File Explorer?

Open Disk Management and check if the USB drive appears there. If it appears without a drive letter, assign one. If it appears as Unallocated, Not Initialized, or asks to be formatted, do not make changes if you need the files.

Should I format a USB drive that Windows does not recognize?

Do not format the USB drive if you need the files. Formatting can erase data and make recovery harder. Only format the drive if you already have a backup or you are sure the files are not important.