How to fix error code 43 in Windows 10?

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Windows 10 is a powerful and widely used operating system, but like any complex software, it can encounter errors that disrupt normal functionality. One such issue is Error Code 43, a frustrating problem that typically appears in the Device Manager and indicates a hardware or driver-related failure. This error can affect various devices, including USB ports, graphics cards, and external storage drives, making it essential to diagnose and resolve it quickly.

For many users, encountering Error Code 43 can be confusing, especially if they rely on the affected device for work or entertainment. The error message—"Windows has stopped this device because it has reported problems. (Code 43)"—does not provide a clear solution, leaving users to troubleshoot on their own. Fortunately, this issue is often fixable with the right approach.

Understanding the root causes of Error Code 43 is the first step toward resolving it. The error typically occurs due to driver conflicts, faulty hardware connections, or system corruption. While it may seem daunting at first, several proven methods can help restore normal functionality without requiring advanced technical skills.

This comprehensive guide will explore what Error Code 43 means, why it occurs in Windows 10, and step-by-step solutions to fix it. Additionally, we’ll cover related troubleshooting topics to ensure your system runs smoothly.

What Does Error Code 43 Mean?

Error Code 43 is a Device Manager error that indicates Windows has encountered a problem with a connected hardware device. When this error appears, the operating system stops the device from functioning to prevent potential system instability or data corruption. The error message usually states:

"Windows has stopped this device because it has reported problems. (Code 43)."

This error can affect a wide range of hardware components, including:

• Graphics cards (GPU)

• USB devices (flash drives, external HDDs, peripherals)

• Network adapters

• Audio devices

The error suggests that the device driver has either malfunctioned or that the hardware itself is failing. While it doesn’t always mean the device is permanently broken, it does require immediate attention to restore functionality.

Why Does Windows 10 Show Error Code 43?

Several factors can trigger Error Code 43 in Windows 10. Understanding these causes can help in applying the correct fix:

1. Outdated or Corrupted Drivers

Windows relies on drivers to communicate with hardware. If a driver is outdated, missing, or corrupted, the system may fail to recognize the device, leading to Error Code 43.

2. Faulty Hardware Connections

Loose cables, damaged USB ports, or improperly seated hardware (such as a GPU) can cause intermittent connectivity issues, prompting Windows to disable the device.

3. Power Supply Issues

Insufficient power delivery (especially for high-power devices like external GPUs) can cause the hardware to malfunction, resulting in this error.

4. Windows System File Corruption

Corrupted system files or incorrect registry entries may interfere with device recognition, leading to Error Code 43.

5. Conflicting Software or Malware

Third-party applications or malware can interfere with device drivers, causing Windows to flag the hardware as problematic.

Identifying the exact cause is crucial for applying the right solution. The next section will guide you through the most effective fixes.

How to Fix Error Code 43 in Windows 10

Method 1: Restart Your Computer

Sometimes, a simple reboot can resolve temporary driver conflicts.

1. Save your work and close all applications.

2. Click Start > Power > Restart.

3. Check if the error persists after reboot.

Method 2: Reconnect the Hardware

If the issue is due to a loose connection:

1. For USB devices: Unplug and reconnect the device to a different port.

2. For internal hardware (GPU, RAM): Power off the PC, reseat the component, and restart.

Method 3: Update or Reinstall Drivers

1. Press Win + X and select Device Manager.

2. Locate the problematic device (marked with a yellow exclamation mark).

3. Right-click it and select Update driver.

4. Choose Search automatically for updated driver software.

5. If updating doesn’t work, select Uninstall device, then restart Windows to reinstall the driver.

Method 4: Roll Back to a Previous Driver

If the error appeared after a driver update:

1. Open Device Manager, right-click the device, and select Properties.

2. Go to the Driver tab and click Roll Back Driver (if available).

Method 5: Check for Windows Updates

Microsoft often releases fixes for driver-related issues.

1. Go to Settings > Update & Security > Windows Update.

2. Click Check for updates and install any pending updates.

Method 6: Run Hardware Troubleshooter

Windows includes a built-in troubleshooter for hardware issues.

1. Open Settings > Update & Security > Troubleshoot.

2. Select Hardware and Devices and run the troubleshooter.

Method 7: Test the Device on Another PC

If the device works on another computer, the issue is likely with your Windows installation. If it fails elsewhere, the hardware may be defective.

Additional Troubleshooting Tips

1. Disable USB Selective Suspend (For USB Devices)

1. Open Control Panel > Power Options.

2. Click Change plan settings > Change advanced power settings.

3. Expand USB settings and disable USB selective suspend.

2. Check Power Management Settings

Some devices may be turned off to save power.

1. In Device Manager, right-click the device and select Properties.

2. Go to the Power Management tab and uncheck Allow the computer to turn off this device to save power.

3. Perform a Clean Boot

Conflicting software may cause Error Code 43.

1. Press Win + R, type msconfig, and press Enter.

2. Under the Services tab, check Hide all Microsoft services, then click Disable all.

3. Go to the Startup tab and click Open Task Manager.

4. Disable all startup items, restart, and check if the error persists.

Conclusion

Error Code 43 in Windows 10 can be frustrating, but it is often fixable with the right troubleshooting steps. Whether the issue stems from driver conflicts, hardware problems, or system corruption, solutions like updating drivers, reconnecting hardware, or running diagnostics can help restore functionality.

If none of the methods work, the hardware itself may be faulty, requiring replacement. However, in most cases, following this guide should resolve the problem efficiently. Keeping your system updated and performing regular maintenance can prevent such errors in the future.