If you’re encountering error messages like “Windows cannot load USB drives” with error codes 39 or 41, it means your system is unable to properly recognize or access your USB devices. These errors can prevent you from using external drives, flash drives, or other USB peripherals, disrupting your workflow or data access. Fortunately, fixing these issues is often straightforward and can be achieved through a series of troubleshooting steps. Before you begin, ensure you have administrative access to your computer, as many fixes require admin rights. Additionally, back up important data if possible, as some solutions involve modifying system drivers or registry entries.
What You’ll Need
- Administrative privileges on your Windows PC
- A stable internet connection (for driver updates, if needed)
- Optional: A second USB device to test after fixes
Step-by-Step
- Restart Your Computer: Sometimes, a simple reboot can resolve temporary glitches causing the error. Disconnect all USB devices, restart your PC, and reconnect the USB drive to see if the issue persists.
- Run the Hardware and Devices Troubleshooter: Windows includes built-in troubleshooters that can detect and fix common hardware issues.
- Open Settings > Update & Security > Troubleshoot > Additional troubleshooters.
- Select ‘Hardware and Devices’ and click ‘Run the troubleshooter.’
- Follow on-screen instructions and apply suggested fixes.
- Update or Reinstall USB Controller Drivers: Faulty or outdated drivers are common causes of error codes 39 and 41.
- Press Windows + X and select Device Manager.
- Expand ‘Universal Serial Bus controllers.’
- Right-click on each entry (e.g., USB Root Hub, Generic USB Hub) and choose ‘Update driver.’
- Choose ‘Search automatically for updated driver software.’
- If updating doesn’t help, right-click again and select ‘Uninstall device.’
- After uninstalling, restart your computer. Windows will automatically reinstall the drivers.
- Check Device Status in Device Manager: Ensure the device isn’t disabled or showing errors.
- In Device Manager, locate your USB device under ‘Universal Serial Bus controllers’ or ‘Disk drives.’
- Right-click and select ‘Properties.’
- Under the ‘General’ tab, check the device status. If it shows an error, note the error code.
- If disabled, click ‘Enable device.’
- Edit the Registry to Fix Error 39: Sometimes, registry corruption causes error 39. Editing the registry can fix this.
- Press Windows + R, type ‘regedit’, and press Enter to open Registry Editor.
- Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class
- Look for the key named {36FC9E60-C465-11CF-8056-444553540000} or similar, which relates to USB devices.
- Backup the registry before making changes: File > Export.
- Delete any lower filters or upper filters entries in the right pane.
- Close Registry Editor and restart your PC.
- Perform a System Restore: If the problem started recently, restoring your system to an earlier point can resolve conflicts.
- Open Control Panel > System and Security > System > System Protection.
- Click ‘System Restore,’ select a restore point before the issue began, and follow the prompts.
- Test the USB Device on Another Computer: To rule out hardware failure, connect your USB drive to another PC. If it doesn’t work there, your device may be faulty.
- Check for Windows Updates: Ensuring your system is up to date can fix bugs related to drivers and hardware compatibility.
- Go to Settings > Update & Security > Windows Update.
- Click ‘Check for updates’ and install any available updates.
Common Mistakes
- Ignoring driver updates and relying solely on automatic Windows updates.
- Uninstalling drivers without restarting your PC, which prevents Windows from reinstalling them properly.
- Editing the registry without backing it up, risking further system issues.
- Connecting the USB device to a faulty or damaged port without testing other ports.
- Assuming hardware failure without testing the device on another system first.
Tips
- Always create a restore point before making registry changes or uninstalling drivers.
- Try different USB ports and cables to rule out physical connection issues.
- Use a different USB device to test whether the problem is with your hardware or the system.
- Keep your Windows system and drivers updated regularly to prevent such issues.
- Use third-party tools like USBDeview to manage and troubleshoot connected USB devices more effectively.
Troubleshooting
If the above steps do not resolve the issue, consider the following troubleshooting tips:
- Check Event Viewer: Open Event Viewer (Windows + R, type ‘eventvwr.msc’) and look for error logs related to USB or driver failures. These logs can offer clues about the root cause.
- Boot into Safe Mode: Restart your PC in Safe Mode and test the USB device. If it works in Safe Mode, a third-party driver or software may be conflicting.
- Perform a Clean Boot: Disable all non-Microsoft services and startup items to identify if a third-party software is causing the conflict.
- Check Power Management Settings: In Device Manager, under USB Root Hubs, right-click and select ‘Properties.’ Under the Power Management tab, uncheck ‘Allow the computer to turn off this device to save power.’
- Reset the BIOS/UEFI: Sometimes, hardware recognition issues stem from BIOS settings. Resetting BIOS to default can help.
- Consult Hardware Support: If none of the above works, consider contacting your device manufacturer or a professional technician for hardware diagnostics.
Frequently Asked Questions
1. What causes error code 39 on USB devices?
Error code 39 typically results from corrupted or missing device drivers, registry issues, or conflicts with other hardware or software.
2. Can I fix error code 41 without reinstalling Windows?
Yes, most fixes like driver updates, registry edits, and hardware troubleshooting can resolve error 41 without reinstalling Windows.
3. How do I know if my USB device is faulty?
Test the device on another computer. If it doesn’t work there either, the device is likely faulty. Also, check for physical damage or unusual behavior.
4. Is it safe to edit the registry to fix these errors?
Yes, if you back up the registry beforehand. Be cautious and follow instructions carefully, as incorrect edits can cause system instability.
5. How often should I update my device drivers?
Regularly checking for driver updates, especially after Windows updates or hardware changes, helps prevent driver-related errors.
6. What if none of the solutions work?
If all troubleshooting steps fail, consider performing a Windows repair install or contacting professional support to diagnose hardware issues.
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