Fix NVIDIA Code 43 Error: Windows Has Stopped This Device

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Edgar Nicov

How-To

5 min. read

Published on October 7, 2025

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The dreaded NVIDIA Code 43 error in Windows signals a problem preventing your graphics card from functioning correctly. This error message, “Windows has stopped this device because it has reported problems,” can be frustrating, especially when you’re trying to game, work, or simply use your computer. Fortunately, there are several troubleshooting steps you can take to resolve this issue and get your NVIDIA graphics card back up and running.

This guide will walk you through various solutions, from simple driver updates to more advanced hardware checks, to help you fix the NVIDIA Code 43 error and restore your system’s graphical capabilities. We’ll cover common causes, step-by-step instructions, and helpful tips to ensure a smooth troubleshooting process.

What Causes the NVIDIA Code 43 Error and How Can You Fix It?

Update Your NVIDIA Drivers

Outdated or corrupted drivers are a primary cause of the Code 43 error. Updating to the latest drivers can often resolve the issue.

Press Windows Key + X and select “Device Manager.”
Expand the “Display adapters” section.
Right-click on your NVIDIA graphics card and select “Update driver.”
Choose “Search automatically for drivers.”
If Windows finds an updated driver, follow the on-screen instructions to install it.
Restart your computer.

If automatic driver updates don’t work, try a clean installation:

Download the latest driver from the NVIDIA website.
Use Display Driver Uninstaller (DDU) to completely remove the old drivers.
Install the new driver you downloaded.
Restart your computer.

Roll Back to a Previous Driver Version

Sometimes, the latest drivers can introduce new issues. Rolling back to a previous driver version that worked correctly might resolve the Code 43 error.

Press Windows Key + X and select “Device Manager.”
Expand the “Display adapters” section.
Right-click on your NVIDIA graphics card and select “Properties.”
Go to the “Driver” tab.
Click “Roll Back Driver” if the option is available.
Follow the on-screen instructions.
Restart your computer.

Check Hardware Connections

A loose or faulty connection can also cause the Code 43 error. Ensure your graphics card is properly seated in its PCI-e slot.

Turn off your computer and unplug it from the power outlet.
Open your computer case.
Locate your NVIDIA graphics card.
Gently remove the graphics card from its PCI-e slot.
Clean the gold connectors on the card with a soft, dry cloth.
Reinsert the graphics card firmly into the PCI-e slot, ensuring it clicks into place.
Close your computer case.
Plug in your computer and turn it on.

Run Hardware and Devices Troubleshooter

Windows includes a built-in troubleshooter that can automatically detect and fix hardware-related issues.

Press Windows Key + I to open Settings.
Go to “Update & Security.”
Select “Troubleshoot.”
Click “Hardware and Devices” and then “Run the troubleshooter.”
Follow the on-screen instructions.
Restart your computer.

Check Power Supply

An insufficient or failing power supply unit (PSU) can cause the Code 43 error, especially with power-hungry graphics cards.

Ensure your PSU meets the minimum power requirements for your graphics card.
Test your system with a known good PSU if possible.

BIOS Update

An outdated BIOS can sometimes cause compatibility issues with your graphics card. Updating your BIOS might resolve the Code 43 error.

Visit your motherboard manufacturer’s website to download the latest BIOS version.
Follow the instructions provided by the manufacturer to update your BIOS.
Caution: Updating the BIOS can be risky. Ensure you follow the instructions carefully to avoid damaging your motherboard.

Tips for Preventing Future Errors

Keep your drivers updated regularly.
Ensure your power supply is adequate for your system.
Monitor your graphics card’s temperature to prevent overheating.
Clean your computer regularly to prevent dust buildup.

Quick Fix for Code 43

Addressing the NVIDIA Code 43 error involves systematic troubleshooting, starting with drivers and extending to hardware checks. By methodically working through these steps, you can often identify and resolve the underlying cause.

FAQ

What does error code 43 mean in Device Manager? Error code 43 in Device Manager indicates that Windows has stopped the device because it has reported problems. This often points to issues with the device’s driver or the hardware itself.

How do I fix error code 43 for my NVIDIA graphics card? You can fix error code 43 by updating your NVIDIA drivers, rolling back to a previous driver version, checking hardware connections, running the Hardware and Devices troubleshooter, checking your power supply, or updating your BIOS.

Can a faulty power supply cause error code 43? Yes, a faulty or insufficient power supply can cause error code 43, especially if your graphics card requires more power than the PSU can provide.

Is it safe to update my BIOS? Updating your BIOS can be risky if not done correctly. Ensure you follow the instructions provided by your motherboard manufacturer to avoid damaging your motherboard.

Common Culprits Behind Code 43 Errors

Here’s a quick comparison of potential causes and their typical solutions:

Cause	Solution	Difficulty
Outdated Drivers	Update to the latest drivers from NVIDIA’s website.	Easy
Corrupted Drivers	Use DDU to completely remove old drivers and reinstall new ones.	Medium
Hardware Connection	Reseat the graphics card in its PCI-e slot.	Medium
Insufficient PSU	Upgrade to a power supply that meets the graphics card’s requirements.	Hard
BIOS Incompatibility	Update the motherboard BIOS to the latest version.	Hard

Resolving NVIDIA Code 43

By systematically addressing potential causes, from driver updates to hardware checks, you can often resolve the NVIDIA Code 43 error and restore your system’s graphical capabilities.