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Error Code 43 on AMD Radeon GPU: Fixes

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Error code 43 with an AMD Radeon GPU means Windows has stopped the device because it reported a problem, and the fix usually involves reinstalling or rolling back the driver, checking the power connections, or resetting the card in Device Manager. This error appears in Device Manager under the GPU’s properties and can stem from a faulty driver, a power delivery issue, an overheating card, or a hardware failure. Below is a practical guide to diagnosing and resolving the issue, with steps that work for most Radeon cards on Windows 10 and 11.

What Error Code 43 Actually Means

Error code 43 is a generic Windows message that appears when a hardware device tells the operating system it has a problem. In Device Manager, you will see a yellow triangle next to the GPU, and the status reads: “Windows has stopped this device because it has reported a problem. (Code 43)”. This is not specific to AMD; Nvidia cards and other devices can show the same code. For a Radeon GPU, the cause is often software-related, but it can also indicate a physical issue like a loose cable or a failing card.

The error can be intermittent or permanent. If it appears right after a driver update, the new driver may be incompatible. If it appears after a reboot, it could be a power management issue or a corrupted driver cache. Understanding the context helps narrow down the fix.

Common Causes of Code 43 on Radeon GPUs

Before diving into fixes, here are the most frequent culprits:

  • Corrupted or outdated drivers – The most common cause. A failed update or a conflict with an old driver can trigger code 43.
  • Power supply issues – The GPU may not be getting enough power, especially under load. Check that all PCIe power cables are firmly connected.
  • Overheating – If the card overheats, it may shut down and report an error. Clean dust from fans and ensure adequate airflow.
  • Hardware failure – A dying GPU, a failing VRAM, or a damaged PCIe slot can cause persistent code 43.
  • Windows Update interference – Sometimes Windows replaces your AMD driver with a generic one, causing conflicts.
  • BIOS settings – Incorrect PCIe settings (like forcing Gen4 when the card only supports Gen3) can lead to instability.

Knowing the cause helps you choose the right fix. Start with the simplest solutions and work your way up.

Step-by-Step Fixes for Code 43

Try these in order. Most users resolve the issue with the first few steps.

  1. Restart your computer – A simple reboot can clear temporary glitches. If the error persists, move on.
  2. Reinstall the GPU driver – Download the latest driver from AMD’s website (or use the AMD Software: Adrenalin Edition app). Use Display Driver Uninstaller (DDU) in Safe Mode to completely remove old drivers, then install the new one. This clears corrupted driver files.
  3. Roll back the driver – If the error started after a recent driver update, go to Device Manager, right-click the GPU, select Properties > Driver > Roll Back Driver. If that option is greyed out, download an older driver from AMD’s site and install it.
  4. Check power connections – Open your PC case and reseat the GPU in its PCIe slot. Ensure all power cables (6-pin, 8-pin, or 12-pin) are plugged in firmly. If your PSU has multiple PCIe cables, try using separate cables instead of daisy-chaining.
  5. Update your chipset drivers – Motherboard chipset drivers can affect PCIe communication. Download the latest from your motherboard manufacturer’s website.
  6. Disable and re-enable the GPU – In Device Manager, right-click the GPU and select “Disable device”. Then right-click again and select “Enable device”. This resets the hardware state.
  7. Check for overheating – Use a tool like GPU-Z or AMD’s software to monitor temperatures. If the card runs above 90°C under load, clean the fans, replace thermal paste (if you’re comfortable), or improve case airflow.
  8. Reset BIOS settings – Enter BIOS (usually by pressing Del or F2 during boot) and reset to defaults. If you changed PCIe settings, set them back to Auto.

If none of these work, the issue may be hardware-related. Test the GPU in another computer if possible, or try a different PCIe slot.

When to Consider Hardware Failure

If you’ve tried all the software fixes and the error persists, the GPU may be physically failing. Signs of hardware failure include:

  • Artifacts (visual glitches) on screen before the error appears.
  • The GPU is not detected in BIOS at all.
  • The card works in another computer but not yours (indicating a motherboard or PSU issue).
  • The card fails in another computer as well – then it’s definitely the GPU.

If the card is under warranty, contact the manufacturer for a replacement. If it’s old, it might be more cost-effective to replace it.

Preventing Future Code 43 Errors

Once you’ve fixed the issue, take these steps to avoid a recurrence:

  • Keep drivers updated – Use AMD’s official software to check for updates, but don’t install beta drivers unless you need them.
  • Use a stable power supply – Ensure your PSU has enough wattage and the correct cables for your GPU. A quality PSU prevents many issues.
  • Monitor temperatures – Clean your PC regularly and ensure good airflow. Overheating is a common cause of hardware errors.
  • Avoid overclocking unless necessary – Overclocks can cause instability. If you do overclock, test thoroughly.
  • Disable Windows automatic driver updates – You can prevent Windows from replacing your AMD driver by going to Device Installation Settings and choosing “No” for automatic driver downloads.

Frequently Asked Questions

Can a faulty HDMI or DisplayPort cable cause code 43?

Yes, a faulty cable can cause the GPU to malfunction. If the cable is damaged or not properly connected, the GPU may not communicate correctly with the monitor, leading to errors. Try a different cable or port.

Does code 43 mean my GPU is dead?

Not necessarily. Code 43 is often a driver issue. Only after exhausting all software fixes and confirming the card fails in another system can you conclude it’s dead.

Will updating the BIOS help?

Sometimes. A BIOS update can improve PCIe compatibility and fix bugs. Check your motherboard manufacturer’s website for updates, but be cautious – a failed BIOS update can brick your motherboard.

Can I still use my computer with code 43?

Yes, but your GPU will not work properly. You’ll likely have no display output from the GPU, so you’ll need to use integrated graphics (if available) or another GPU.

Is it safe to use DDU?

Yes, Display Driver Uninstaller is a trusted tool used by many to completely remove GPU drivers. Use it in Safe Mode to avoid conflicts.

Why does code 43 appear after a Windows update?

Windows updates can sometimes install incompatible drivers or change settings. Rolling back the driver or reinstalling the AMD driver usually fixes it.

Related

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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