The nvlddmkm.sys failed error usually points to a problem with the NVIDIA graphics driver or something interacting badly with it. It often appears as a crash, a black screen, a game freeze, or a Windows error message tied to your display driver.
The good news is that this error is often fixable without replacing hardware. The most useful fixes are usually driver-related, but power settings, system files, and GPU instability can also play a role.
1. Reinstall the NVIDIA Graphics Driver Cleanly
A damaged or incompatible NVIDIA driver is the most common reason for nvlddmkm.sys failures. A clean reinstall removes old driver files that may still be causing conflicts after an update.
- Download the latest NVIDIA driver for your exact GPU model from NVIDIA's official website.
- Download Display Driver Uninstaller (DDU) if you want the cleanest possible removal.
- Boot into Safe Mode and run DDU to remove the current NVIDIA driver completely.
- Restart Windows and install the newly downloaded NVIDIA driver.
- Choose the clean installation option if the installer offers it.
2. Roll Back the Driver if the Problem Started After an Update
If nvlddmkm.sys started appearing right after a recent NVIDIA driver update, the newer driver may be the cause. In that case, rolling back to the previous driver can quickly confirm whether the update introduced the problem.
- Open Device Manager.
- Expand Display adapters and right-click your NVIDIA GPU.
- Select Properties, then open the Driver tab.
- Click Roll Back Driver if the option is available.
- Restart the computer and test whether the error stops.
3. Check for Overclocking and GPU Instability
The nvlddmkm.sys error can also happen when the GPU or VRAM is unstable. This is common if the graphics card is overclocked, undervolted too aggressively, or running too hot.
- Return the GPU to stock settings in MSI Afterburner, ASUS GPU Tweak, or similar software.
- Disable any custom fan curves or voltage tweaks temporarily.
- Close background tools that monitor or control GPU settings.
- Test the system again in a game or benchmark to see whether the crash returns.
4. Repair Windows System Files and Update Windows
Corrupted Windows files can interfere with drivers and graphics services. Windows updates can also include fixes that improve display driver stability or compatibility.
- Open Command Prompt as an administrator.
- Run sfc /scannow and wait for it to finish.
- If SFC reports problems it cannot fix, run DISM /Online /Cleanup-Image /RestoreHealth.
- Open Windows Update and install all available updates.
- Restart if Windows asks you to complete the installation.
5. Inspect Hardware, Power, and Connection Issues
If driver fixes do not help, the problem may be related to the graphics card itself, power delivery, or a bad connection inside the PC. Loose cables or unstable power can trigger driver crashes that look software-related at first.
- Reseat the graphics card in its PCIe slot if you are comfortable opening the PC.
- Check the PCIe power cables going to the GPU.
- Make sure the power supply is adequate for your graphics card.
- Try a different display cable or monitor port.
- If available, test the GPU in another system or test another GPU in your system.
How to Narrow Down the Cause
The pattern of the crash can help you choose the right fix first. If the error started after a driver update, focus on reinstalling or rolling back the driver. If it happens only during gaming or heavy GPU use, check overclocking, heat, and power delivery. If Windows itself is unstable in general, system file repair and updates are worth trying early.
Which Fix Should You Try First?
Start with a clean NVIDIA driver reinstall if you want the most likely solution. If the problem began immediately after updating, roll back the driver first. If crashes happen under heavy load, check for overclocking and heat. When software fixes do not solve it, move on to Windows repair and hardware checks.
