Table of Contents
1. Update or rollback the graphics card driver
2. Check for Windows system updates
3. Troubleshoot hardware problems
4. Disable or adjust power management settings
Home System Tutorial Windows Series How to troubleshoot 'nvlddmkm.sys' error?

How to troubleshoot 'nvlddmkm.sys' error?

Jul 21, 2025 am 02:10 AM

When encountering the "nvlddmkm.sys" error, it is usually caused by graphics card driver problems or hardware failures. You can follow the following steps to solve it: 1. Update or roll back the graphics card driver and use the Device Manager or DDU tool to handle it; 2. Check and install Windows system updates; 3. Troubleshoot hardware problems, including GPU temperature, overclocking status and memory stability; 4. Disable PCI Express energy-saving settings in power management. Through the above methods, the problem can be effectively solved by gradual investigation.

How to troubleshoot \

Encountering "nvlddmkm.sys" error usually means something is wrong with your graphics card driver or hardware. This file is one of the core components of the display driver of NVIDIA graphics card. When an error occurs, the system often displays a blue screen, prompting an error code similar to "DRIVER_IRQL_NOT_LESS_OR_EQUAL". Don't panic. Although this situation is annoying, it can be solved through several steps most of the time.

How to troubleshoot

1. Update or rollback the graphics card driver

The most common cause is driver incompatible or damaged. The first step at this time is to check the status of the graphics card driver:

  • Update driver : Go to NVIDIA official website, enter your graphics card model and operating system version, and download the latest driver to install.
  • Update using Device Manager : Right-click the NVIDIA graphics card under "Show Adapter", and select "Update Drivers" > "Automatically search for updated drivers".
  • Rollback driver : If you have recently updated the driver, you can try rolling back to the previous version to see if there is still an error (right click on the graphics card > Properties > Drivers > Rollback).

If you are not sure which version is suitable for you, you can try using a tool like DDU (Display Driver Uninstaller) to completely uninstall the current driver and then reinstall it.

How to troubleshoot

2. Check for Windows system updates

Sometimes, the "nvlddmkm.sys" error can also be caused by problems with the system itself. Microsoft will fix some driver compatibility issues through system updates:

  • Open Settings > Windows Update to check if updates are available
  • Install all recommended update patches, especially cumulative updates and driver-related updates

In some cases, it takes several restarts to take effect after installing the update, so you might as well try to boot a few times to see if there are still problems.

How to troubleshoot

3. Troubleshoot hardware problems

If the driver is fine, then you have to consider whether there is something wrong with the hardware. Especially poor heat dissipation of graphics cards, excessive overclocking or aging of video memory may lead to this error:

  • Check the temperature : Use MSI Afterburner or HWMonitor to see if the GPU temperature is too high (it is a bit dangerous if it exceeds 85°C)
  • Restore the default frequency : If you have overclocked the graphics card before, it is recommended to restore the factory settings and test it
  • Memory test : You can use MemTestG8 or FurMark to do stability tests to see if there are any exceptions

Of course, if conditions permit, it is the most direct way to check if you change a graphics card.


4. Disable or adjust power management settings

Some users reported that the system will experience nvlddmkm.sys error when switching graphics card status in energy-saving mode. You can try to adjust the power options:

  • Open Control Panel > Power Options
  • Edit the current power plan
  • Find PCI Express > Link Status Power Management in Advanced Settings and set it to Off

In addition, you can also turn off the PCIe power saving function in the BIOS, but this step must be done with caution.


Basically these common methods of handling it. Start with software first, such as updating drivers and system patches, and then gradually troubleshooting hardware problems. Although this error seems scary, most cases can be solved.

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