How to fix error code 43 in Windows 11?

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Error Code 43 is a common yet frustrating issue that Windows 11 users encounter, particularly when dealing with hardware devices such as graphics cards, USB drives, or external peripherals. This error typically appears in the Device Manager with the message: "Windows has stopped this device because it has reported problems. (Code 43)." While the exact cause can vary, it often stems from driver conflicts, hardware malfunctions, or system corruption.

For many users, Error Code 43 can disrupt productivity, especially if it affects critical components like GPUs or storage devices. The error essentially means that Windows has detected a problem with the connected hardware and has disabled it to prevent further issues. Fortunately, there are several troubleshooting steps that can help resolve this problem without requiring advanced technical expertise.

Understanding the root causes of Error Code 43 is essential before attempting fixes. Some of the most common triggers include outdated or corrupted drivers, faulty hardware connections, incorrect BIOS settings, or even Windows updates that interfere with device functionality. Since this error can occur across various devices, the solutions may differ slightly depending on the affected component.

This comprehensive guide will walk you through multiple proven methods to fix Error Code 43 in Windows 11. From basic driver updates to more advanced system repairs, we’ll cover step-by-step solutions to help you regain full functionality of your hardware. Whether you're a casual user or a tech-savvy individual, these methods will help you diagnose and eliminate the issue effectively.

Troubleshooting Methods to Fix Error Code 43

1. Restart Your Computer

Sometimes, a simple restart can resolve temporary glitches causing Error Code 43. Shut down your PC completely, wait a few seconds, and then power it back on. Check if the error persists in Device Manager.

2. Reconnect the Hardware Device

If the error is related to an external device (e.g., USB, GPU, or external drive), disconnect it and reconnect it to another port. For internal hardware like graphics cards, try reseating the component securely.

3. Update or Reinstall Device Drivers

Open Device Manager (press Win + X and select it).
Locate the problematic device (marked with a yellow exclamation mark).
Right-click it and select Update driver → Search automatically for drivers.
If updating doesn’t work, choose Uninstall device, then restart your PC to let Windows reinstall the driver.

4. Roll Back to a Previous Driver Version

If the error appeared after a driver update:

In Device Manager, right-click the device → Properties → Driver tab.
Click Roll Back Driver (if available) and follow the prompts.

5. Check for Windows Updates

Microsoft often releases patches for hardware compatibility issues.

Go to Settings → Windows Update → Check for updates.
Install any pending updates and restart your PC.

6. Disable USB Selective Suspend (For USB Devices)

Open Control Panel → Power Options.
Click Change plan settings → Change advanced power settings.
Expand USB settings → USB selective suspend setting → Set to Disabled.

7. Run Hardware Troubleshooter

Go to Settings → System → Troubleshoot → Other troubleshooters.
Run the Hardware and Devices troubleshooter.

8. Check for Hardware Failure

If the error persists, test the device on another computer. If it fails there as well, the hardware may be defective and need replacement.

Advanced Fixes for Persistent Error Code 43

9. Perform a Clean Boot

Press Win + R, type msconfig, and hit Enter.
Go to the Services tab → Check Hide all Microsoft services → Click Disable all.
Switch to the Startup tab → Open Task Manager → Disable all startup items.
Restart your PC and check if the error is resolved.

10. Reset BIOS/UEFI Settings

Restart your PC and enter BIOS (usually by pressing F2, Del, or F12 during boot).
Look for Load Default Settings or Reset to Optimized Defaults.
Save changes and exit.

11. Reinstall Windows 11 (Last Resort)

If all else fails, a clean Windows installation may be necessary. Backup your data and use Windows Media Creation Tool to reinstall the OS.

Conclusion

Error Code 43 in Windows 11 can be disruptive, but it’s usually fixable with the right troubleshooting steps. Starting with basic solutions like driver updates and hardware reconnections, you can often resolve the issue without deep technical knowledge. If the problem persists, advanced methods such as BIOS resets or clean Windows installations can help restore functionality.

By systematically applying these fixes, you can diagnose whether the issue is software-related (drivers, OS conflicts) or hardware-related (faulty device). If the hardware itself is defective, replacement may be the only solution. However, in most cases, Error Code 43 can be resolved with patience and the right approach, ensuring your Windows 11 system runs smoothly again.