To fix USB ports that are not working in Windows 11, first test the device, cable and port separately, then bypass any hub or dock. Restart the PC, install Windows and manufacturer updates, and check Device Manager before changing power settings or reinstalling a controller. If multiple known-good devices fail in every port—or USB also fails before Windows starts—the cause may be firmware or hardware that Windows troubleshooting cannot repair.
Identify what “USB not working” means
Different symptoms point to different causes. A device that receives power but does not appear in Windows may have a data-path, cable, driver or compatibility problem; a device that repeatedly disconnects may be losing power or struggling to resume after sleep. If only one device fails, check that device and its cable first. If several devices fail in one port, suspect that port; if all ports fail, consider the USB controller, chipset, firmware or motherboard.
- No power: The device does not light up or charge. Check the cable, port and power source.
- Power but no detection: Charging can work even when the data connection does not. A charge-only cable, damaged data contacts, driver problem or unsupported connection mode can cause this.
- Failure after sleep: Investigate power management, the dock and driver or firmware resume behavior.
- USB-C charges but will not transfer data or drive a display: The connector shape alone does not guarantee those capabilities.
- Failure began after an update: The timing is worth checking, but does not by itself prove the update caused the problem.
Microsoft recommends trying another port, removing an intermediate hub, checking cables and confirming that a hub has enough power. See Microsoft’s basic USB device troubleshooting steps.
Test the port, device, cable and hub
Change one part of the connection at a time. That makes it easier to tell whether the fault follows the device, cable, port or hub.
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- Unplug the USB device. Check its connector and cable for looseness, bent contacts, cuts or debris. Do not force a damaged connector into a port.
- Connect the device directly to a different port on the PC. Remove any hub, dock, extension cable or adapter.
- Connect a known-good USB device to the suspect port.
- Try the original device and cable on another computer. If possible, also try the device with a different known-good data cable.
- If the device is bus-powered, connect the computer to AC power. If the device has its own power adapter, connect it.
- Disconnect unnecessary USB devices and test again, especially if a hub or several power-hungry devices are involved.
| Test result | Where to look next |
|---|---|
| The device fails on another computer too | The device, cable or its power source is the leading suspect. |
| Several devices fail in just one port | Check that port for damage or a local connection problem. |
| Rear desktop ports work but front ports do not | The case’s front-panel cable, header or front I/O board may be at fault. |
| A device works directly but not through a hub or dock | Check hub power, cable, compatibility and dock firmware. |
| A device works after a restart but fails after sleep | Investigate power management, firmware and driver resume behavior. |
| No USB devices work, including before Windows loads | Look beyond Windows drivers to firmware, settings or hardware. |
Restart, then try a full power-cycle
A restart reloads Windows and its drivers. A full shutdown and power-cycle may also clear a controller or embedded controller that did not recover correctly. Start with a normal restart; if that does not help, try this safer sequence:
- Save your work and shut down Windows fully. Do not use Sleep or Hibernate.
- Disconnect USB devices and, if practical, disconnect the AC adapter.
- For a desktop, switch off or unplug the power supply. For a laptop, leave the case closed and do not remove an internal battery.
- Only if the computer manufacturer permits it, hold the power button for about 10–15 seconds while the computer is shut down. Power-button behavior varies by model; check its manual if unsure.
- Reconnect power, start Windows and test one known-good USB device directly.
Install Windows and manufacturer updates
Check Windows Update
Open Settings → Windows Update → Check for updates, install available updates and restart when prompted. If Windows Update itself is failing, Microsoft lists troubleshooting steps at Troubleshoot problems updating Windows.
Check the PC, motherboard and dock maker’s support pages
Use the support page for the exact computer, motherboard or dock model. Look for chipset, USB or Serial I/O, platform-controller, dock and USB-C or Thunderbolt software updates. A BIOS or UEFI update may also address compatibility, but use only the package for the exact model and follow the maker’s instructions. Keep the computer on reliable AC power while updating firmware; an interrupted or incorrect BIOS update can cause serious problems.
Prefer Windows Update and the PC, motherboard or dock manufacturer’s packages. Avoid generic driver-updater utilities, which may offer an unsuitable or unwanted package. If Windows says the best driver is already installed, that does not establish that the current OEM chipset or firmware package is installed.
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Check Device Manager for errors
Open Device Manager by searching for it from Start, pressing Windows + X → Device Manager, or pressing Windows + R, entering devmgmt.msc and pressing Enter. Look under Universal Serial Bus controllers and Other devices. Depending on what is failing, also check Human Interface Devices, Disk drives or Portable Devices.
Look for a yellow exclamation mark, Unknown USB Device, Device Descriptor Request Failed, a missing controller, or an entry such as USB Root Hub, Generic USB Hub or USB xHCI Host Controller with an error. Right-click the affected entry, choose Properties and read the message under Device status. The error code can help identify a driver or device problem; Microsoft explains codes at Error codes in Device Manager.
Update, roll back or reinstall the affected device
- Right-click the affected entry and choose Update driver → Search automatically for drivers.
- If the problem began after a driver change and Roll Back Driver is available in the driver’s properties, consider rolling it back.
- If the device still fails, right-click that device and choose Uninstall device.
- Restart Windows so it can rediscover the device and reinstall its driver.
Microsoft documents device removal in Using Device Manager to uninstall devices and driver packages. Create a restore point before making driver changes where possible.
Reinstall a USB controller only when you can recover input
If Device Manager points to a USB controller or hub, uninstalling the affected entry and restarting can prompt Windows to detect it again. Do not remove every controller blindly: if your only keyboard and mouse are USB, they may stop working until the restart.
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- Make sure you can still control the computer with a built-in laptop keyboard or touchpad, or another working input method.
- Open Device Manager and expand Universal Serial Bus controllers.
- Right-click the affected USB controller or hub and select Uninstall device. Start with the relevant entry rather than removing everything.
- Restart the PC and let Windows rediscover the hardware.
If no keyboard or mouse works, do not uninstall controllers without a recovery plan. A built-in laptop input device or working Bluetooth input device may provide one.
Test USB power-management settings for sleep or disconnect problems
USB hub power setting
For an intermittent device or a problem after sleep, you can temporarily test whether Windows is turning off a hub to save power:
- In Device Manager, expand Universal Serial Bus controllers.
- Right-click a USB Root Hub or Generic USB Hub and select Properties.
- If a Power Management tab is present, temporarily clear Allow the computer to turn off this device to save power.
- Select OK and test the device.
The tab is not available for every hub or Windows build.
USB selective suspend
As a temporary diagnostic for a specific sleep/resume or intermittent-device problem, search for Edit power plan, open Change advanced power settings, then expand USB settings → USB selective suspend setting. Select Disabled, choose Apply → OK, restart and test.
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Microsoft recommends leaving selective suspend enabled by default. Disabling it can increase power use and reduce laptop battery life; if the test helps, look for a controller, chipset, dock or device driver update rather than treating the change as a universal fix. See Microsoft’s explanation of USB selective suspend.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Troubleshoot USB-C, docks and external drives
USB-C ports, cables and docks
USB-C describes the connector, not every capability it supports. A port may support some combination of USB 2.0 or faster data, USB4, DisplayPort video, Thunderbolt and USB Power Delivery; it may also have narrower capabilities. The computer, port, cable, dock and connected device all need to support the function you want. A port that charges a phone is not necessarily capable of video output, Thunderbolt, USB4 speeds or enough power for a bus-powered SSD.
- Check the computer’s manual and port markings for supported functions.
- Use the device’s supplied cable where possible, or a data-rated cable that supports the required speed, power and display function.
- Connect the device directly to the PC, bypassing the dock or hub.
- Connect a laptop to AC power, then test the same dock or device on another compatible computer if available.
- Check the manufacturer’s support page for dock firmware and USB4 or Thunderbolt software.
- Where available, open Settings → Bluetooth & devices → USB to inspect USB-related settings or notifications.
Microsoft’s USB-C troubleshooting guide covers power limitations and cases where the PC, device, dock or cable does not support the required USB4 capability.
USB storage detected but missing from File Explorer
First check whether the device appears in Device Manager. If it is present there but missing from File Explorer, the issue may be with the volume or drive letter rather than USB detection. A drive visible in Disk Management without a drive letter may need one assigned; if it shows as unallocated or Windows asks to format it, do not format it if the files matter. For disconnections during transfers, test another cable and computer and consider the enclosure, power, heat or drive health. Preserve important data before taking a destructive step.
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Repair Windows system files if detection remains inconsistent
DISM and System File Checker can repair Windows image and system-file problems, but cannot fix damaged ports, failed controllers, bad cables, inadequate hub power or unsupported USB-C features. To run them:
- Open Start, search for Terminal or Command Prompt, and choose Run as administrator.
- Run
DISM.exe /Online /Cleanup-image /Restorehealthand wait for it to complete. - Run
sfc /scannow. - Restart Windows and test the device again.
Microsoft includes these commands in its Windows update troubleshooting guidance.
Undo a recent update only if the timing fits
If USB worked immediately before an update and stopped soon afterward, check the update history and whether the problem affects all devices or only one dock, controller or peripheral. Timing is a clue, not proof that Windows Update caused the fault. Check for a matching OEM driver or firmware update before removing an update.
- Open Settings → Windows Update → Update history.
- Select Uninstall updates, if available, and review whether a recent update is a plausible match.
- If a suitable restore point exists, consider System Restore. Go back may be available after a recent feature upgrade.
- Back up important files before using recovery options. Reset or reinstall operations can remove applications, settings or files.
Microsoft describes available approaches and their trade-offs in Recovery options in Windows.
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Use a power report for advanced diagnosis
For an intermittent power-management issue, an administrator can open Terminal or Command Prompt and run powercfg /energy. Windows generates an HTML report in the current directory, typically after a short observation period. It may flag power-efficiency issues, including ineffective USB selective suspend use, but does not necessarily identify the failed component. Microsoft explains the command and USB power diagnostics at USB ETW and power management.
When the problem points to BIOS or hardware
Software troubleshooting is unlikely to repair a physically broken connector or failed motherboard controller. Escalate to the PC maker or a repair professional when multiple known-good devices fail in every port, USB input also fails in firmware setup or a boot menu, a controller is missing, or a port is loose, bent, corroded or burned.
- If you recently changed firmware settings, consider loading BIOS/UEFI defaults and checking that onboard USB controllers are enabled. Defaults may also change boot, storage, virtualization, fan or security settings, so note custom settings first.
- Install a BIOS update only if it is for the exact model, from its manufacturer, and you can follow the update instructions on reliable AC power.
- On a desktop, compare front-panel ports with rear motherboard ports. If only the front ports fail, the front-panel cable, header or I/O board may need service.
- If the same dock fails on multiple compatible computers, investigate or replace the dock; if ports fail outside Windows, seek hardware diagnosis.
Do not clear CMOS as a routine USB fix. It can reset settings unrelated to USB and create a separate recovery problem.
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