How to Fix “USB Device Not Recognized” in Windows 11

“USB Device Not Recognized” means Windows 11 can’t identify your USB device. That’s frustrating, but the cause is usually a loose connection, bad cable, power issue, driver error, or failed device.

Quick Diagnosis

Disconnect the device, wait 10 seconds, and reconnect it.
Replace its removable cable with a known-working cable.
Try another USB port. Use the opposite side of a laptop or the rear of a desktop.
Remove any USB hub, dock, extension cable, or adapter. Connect the device directly.
Restart the PC.
Test the device on another computer.

Don’t skip these checks. They often find the cause faster than changing drivers or power settings.

Test result	Likely cause
A replacement cable works	The original cable is damaged or only supports charging
Another port works	The first port is damaged, dirty, disabled, or lacks power
A direct connection works	The hub, dock, adapter, or its power supply is faulty
The device fails on every computer	The device or its cable is probably faulty
Several USB devices fail only on one PC	The PC’s drivers, USB controllers, or hardware need attention

Common USB Issues and Solutions

Fix #1: Restart the PC

Problem: The device worked before, but Windows now reports “USB Device Not Recognized.”

Symptoms:

The error started without a hardware change.
Reconnecting the device doesn’t help.
Other USB ports may act strangely.

Cause: The Windows USB system can get stuck after sleep, a dropped connection, or a driver failure.

Save your open work.
Disconnect the affected USB device.
Open Start > Power.
Select Restart, not Shut down.
Reconnect the device after Windows starts.

A restart reloads the USB controllers. That’s why this simple fix works so often.

Verify: Open File Explorer or the device’s usual app. Check that Windows can use it without showing the error again.

Fix #2: Install Windows updates

Problem: Windows detects the device only sometimes or stops detecting it after an update.

Symptoms:

The device works on another PC.
Device Manager can’t find a better driver.
More than one USB device acts incorrectly.

Cause: Windows Update provides compatibility fixes and some approved device drivers.

Open Settings > Windows Update.
Select Check for updates.

Windows 11 Windows Update page with Check for updates highlighted

Install all available Windows updates.
Open Settings > Windows Update > Advanced options > Optional updates.
Install a driver update only if its device or maker matches your hardware.
Restart Windows.

Check the optional updates, but don’t install every listed driver. The names should match your PC or USB hardware.

Verify: Reconnect the USB device and restart the PC again. Check whether Windows keeps detecting the device.

Fix #3: Reinstall the Unknown USB Device

Problem: Device Manager shows “Unknown USB Device,” “Code 28,” “Code 43,” or a yellow warning icon.

Symptoms:

“Code 28” appears when the required driver isn’t installed.
“Code 43” means Windows stopped the device after it or its driver reported a failure.
The device appears under Universal Serial Bus controllers or Other devices.

Cause: Windows may have a missing, damaged, or wrong driver. Code 43 can also point to a bad cable or failed device. Complete the physical checks first.

Right-click Start and select Device Manager.

Windows 11 Start context menu with Device Manager selected

Expand Universal Serial Bus controllers and Other devices.
Find “Unknown USB Device,” the device name, or an entry with a warning icon.

Device Manager with Universal Serial Bus controllers expanded and an affected or Unknown USB Device entry highlighted

Right-click the entry and select Properties.
Read the Device status box on the General tab. Note the exact error code.

USB device Properties General tab with Device status and its displayed error code highlighted

Close Properties, right-click the device, and select Update driver.
Select Search automatically for drivers.

Update Drivers dialog with Search automatically for drivers highlighted

If the error remains, right-click the device and select Uninstall device.
Select Uninstall in the confirmation box. Don’t remove the driver software unless you have the correct replacement.

Uninstall Device confirmation dialog with Uninstall highlighted and a note to restart afterward

Open Action > Scan for hardware changes, or restart the PC.

Device Manager Action menu with Scan for hardware changes highlighted

Reconnect the device and wait for Windows to install it again.

This removes the device’s current setup and makes Windows rebuild it. It’s usually the best driver fix for Code 28 and some Code 43 errors.

Verify: Return to the device’s Properties page. The Device status box should say, “This device is working properly.”

Fix #4: Disable USB power saving

Problem: The USB device disconnects after sitting idle, fails after sleep, or acts differently on battery power.

Symptoms:

Reconnecting the device restores it for a while.
The problem starts after the display or PC sleeps.
A USB network adapter, audio device, or storage drive disconnects at random.

Cause: USB selective suspend or hub power settings may cut power to the connection.

Open Start, type Control Panel, and open it.
Select Hardware and Sound > Power Options.
Beside the active plan, select Change plan settings.
Select Change advanced power settings.
Expand USB settings > USB selective suspend setting.
Set On battery and Plugged in to Disabled, where both options appear.
Select Apply > OK.

Advanced Power Options with USB settings and USB selective suspend setting expanded, showing On battery and Plugged in controls

Right-click Start and open Device Manager.
Expand Universal Serial Bus controllers.
Open the related USB Root Hub or Generic USB Hub entry.
Select the Power Management tab.
Clear Allow the computer to turn off this device to save power.
Select OK.

USB Root Hub Properties Power Management tab with Allow the computer to turn off this device to save power highlighted

Repeat the hub setting only for hubs tied to the affected device. Then restart Windows.

I’d use this fix when the problem starts after sleep or idle time. Disabling it for every hub can drain a laptop battery faster.

Verify: Leave the device connected through a normal idle or sleep cycle. Turn the settings back on if disabling them makes no difference.

Fix #5: Reinstall all USB controllers

Problem: Several USB devices or ports fail on the same PC.

Symptoms:

Known-working devices fail in several ports.
Reinstalling the affected device didn’t help.
Entries under Universal Serial Bus controllers show warnings.

Cause: One or more host controller or root hub drivers may be damaged or stuck.

Save your work before continuing.
Connect a Bluetooth keyboard or mouse if the PC relies on USB input.
Right-click Start and select Device Manager.
Expand Universal Serial Bus controllers.
Right-click a USB host controller and select Uninstall device.
Confirm the removal.

USB controller context menu with Uninstall device highlighted and a warning that connected USB devices may stop temporarily

Repeat this for the USB controller entries. USB input devices may stop working during this process.
Restart through Start > Power > Restart if your input devices still work. Otherwise, press the physical power button once and let Windows shut down.
Let Windows reinstall the controllers during startup.

This step can take out your keyboard and mouse for a short time. Prepare before removing anything. I’d skip it when only one device fails.

Verify: Test several known-working devices in different ports. Use this fix only when several devices or ports fail.

Fix #6: Install the manufacturer’s chipset or USB driver

Problem: Windows can’t find a suitable driver, or reinstalling the controllers doesn’t fix several ports.

Symptoms:

Windows Update offers no matching driver.
The PC’s USB controller has a warning icon.
Problems began after reinstalling Windows.

Cause: Windows Update may not have the model-specific chipset, USB, or firmware package.

Find the PC model under Settings > System > About. For a custom desktop, find the exact motherboard model instead.
Visit the official support site for the PC or motherboard maker.
Search for the exact model and Windows 11.
Download the latest matching chipset or USB controller driver.
Check the publisher and model before opening the installer.
Follow the maker’s installation steps.
Restart Windows.

Avoid third-party driver update tools. Get laptop drivers from the laptop maker. Get custom desktop drivers from the motherboard maker. A near match isn’t close enough.

Verify: Open Device Manager and check that the controller has no warning icon. Then reconnect the affected device.

Fix #7: Bypass the USB hub or dock

Problem: The device fails only through a hub, dock, monitor, or adapter.

Symptoms:

A direct PC connection works.
Several high-power devices share the same hub.
The device connects and disconnects again and again.

Cause: The hub may be faulty, have a damaged cable, or lack enough power.

Disconnect the device from the hub or dock.
Connect it directly to a USB port on the PC.
Disconnect other devices from the hub.
Connect the hub’s power adapter if it supports one.
Test another compatible hub or dock.

USB hard drives, capture devices, and some audio devices can draw more power than an unpowered hub provides. Fast, repeated disconnects are a common clue.

Verify: Transfer data or use the device for several minutes through the direct connection. If it stays stable, replace the hub or use its power supply.

Fix #8: Test the device on another computer

Problem: Cable, driver, and port checks haven’t found the failed part.

Symptoms:

Windows still reports Code 43.
The device disconnects again and again.
No computer can identify it correctly.

Cause: The USB device, its connector, or its internal parts may have failed.

Safely disconnect the device.
Use the same cable to connect it to another computer.
Test it again with another compatible cable.
Connect a known-working USB device to the original PC.
Compare the results.

This test removes much of the guesswork. Two computers and two cables give you a better hardware test than changing ports on one PC.

Verify: If the device fails on two computers with two cables, it’s probably faulty. If known-working devices fail only on the first PC, check its drivers, ports, motherboard, or power supply.

USB Error Messages Explained

Message or code	Meaning	Best next step
“USB Device Not Recognized”	Windows couldn’t identify the connected device	Reconnect it, swap the cable and port, then restart
“Unknown USB Device”	Windows sees a USB connection but can’t identify the hardware	Check Device status, then uninstall and rescan
“The drivers for this device are not installed. (Code 28)”	The required driver is missing	Run Windows Update or install the official driver
“Windows has stopped this device because it has reported problems. (Code 43)”	The device or driver reported a failure	Check the cable and hardware, then reinstall the device
Yellow warning icon	Device Manager found a device or driver problem	Open Properties and read Device status
“Power surge on the USB port”	The device asked for more power than the port can provide safely	Disconnect it and use a powered hub or correct power adapter
“Display connection might be limited”	A USB-C port, cable, or adapter lacks the needed display support	Check the PC’s USB-C specs and use a supported cable

The wording matters. Code 28 points to a missing driver. Code 43 can come from software or failed hardware.

For USB-C charging, display, or adapter warnings, use Microsoft’s official USB-C troubleshooting page.

Windows 11 Storage-Specific Issue

Fix #9: Assign a missing drive letter

Problem: Windows detects a USB storage device, but it doesn’t appear in File Explorer.

Symptoms:

The drive appears in Device Manager.
Disk Management shows its partition.
The partition has no drive letter.

Cause: Windows can detect the disk, but File Explorer hides a partition with no drive letter. That’s different from a USB recognition error.

Right-click Start and select Disk Management.
Find the USB disk by its size and current partition.
Right-click the partition and select Change Drive Letter and Paths.
Select Add if no letter exists.
Choose an unused drive letter.
Select OK.

Disk Management Change Drive Letter and Paths dialog for a USB storage device, with a warning to identify the disk by size and not format or delete it

Check the disk size twice before changing anything. Don’t format the disk, delete its volume, or initialize it during this fix.

Verify: Open File Explorer and check under This PC. If Disk Management shows the drive as unallocated, unreadable, or missing, stop if you need its files.

Configuration Mistakes to Check

Charge-only cable: Some USB cables provide power but carry no data. Use a cable marked for data transfer.
Wrong USB-C capability: A USB-C connector doesn’t promise video output, Thunderbolt, fast charging, or every USB speed.
Unpowered hub: Connect the hub’s correct power adapter when using devices that need more power.
Wrong driver source: Match the PC, motherboard, or device model exactly. Use the maker’s official site.
Over-aggressive power saving: Disable selective suspend only as a test. Leaving it off can reduce laptop battery life.
Missing drive letter: Check Disk Management before deciding that a detected storage device has failed.

USB-C can be confusing because similar ports and cables support different functions. Check the PC and cable specs when charging or video fails.

Getting Help

Collect these details before contacting the PC or device maker:

Open Device Manager and record the device name and exact error code from Properties > General.
Open Properties > Details, select Hardware Ids, and copy the first value.
Run msinfo32 from the Start search box. Record the System Model and BIOS Version/Date.
Open Event Viewer > Windows Logs > System. Look for warnings logged when the USB device disconnected.
Note which cables, ports, hubs, and computers you tested.

These details help support staff tell a Windows driver problem from failed hardware. Exact error codes are more useful than saying the device “sometimes disappears.”

Use the Microsoft Support community or the device maker’s official support channel. Don’t post your Windows product key, device serial number, email address, or other private data in a public forum.

Prevention Tips

Eject USB storage through Safely Remove Hardware and Eject Media before unplugging it.
Avoid bending connectors or putting side pressure on attached USB devices.
Use powered hubs for hard drives and other devices that need more power.
Keep Windows and chipset drivers current.
Replace loose, frayed, or charge-only cables.
Keep ports free of dust, but don’t put metal tools inside them.
Back up important USB storage because repeated disconnects can damage its file system.

A cable that works only when held at an angle is already failing. Replace it before a stopped transfer damages your files.

Wrapping Up

Step	Action	Applies to
1	Restart Windows	A sudden, one-time recognition error
2	Update Windows	Compatibility and driver issues
3	Reinstall the affected device	Code 28, Code 43, or Unknown USB Device
4	Adjust USB power settings	Disconnects after idle or sleep
5-6	Reinstall controllers or chipset drivers	Several failed ports or devices
7-8	Bypass the hub and test another PC	Suspected cable, hub, device, or PC failure
9	Assign a drive letter	A detected drive missing from File Explorer

Restarting Windows and reinstalling the affected device usually clear “USB Device Not Recognized.” Try those after checking the cable and port.

If the error follows the device across two computers and two cables, replace the device. If several devices fail only on one PC, focus on that PC’s controllers, drivers, ports, motherboard, or power supply.