How to Fix nvlddmkm.sys Blue Screen Errors on Windows (2026 Guide)

If your computer keeps crashing with an nvlddmkm.sys error, you’re dealing with an NVIDIA graphics driver problem. This file controls how your NVIDIA graphics card communicates with Windows. When it fails, you get blue screens, freezes, or complete system crashes.

Let me show you exactly what’s happening and how to fix it.

What Is nvlddmkm.sys?

The nvlddmkm.sys file is part of your NVIDIA graphics driver. It’s a kernel mode driver that sits between your graphics card hardware and Windows operating system.

This file handles:

• Communication between your GPU and system memory
• Display rendering and output to your monitor
• Graphics processing instructions from applications
• Power management for your graphics card

The file lives in C:\Windows\System32\drivers\ and loads every time you start Windows. When it works correctly, you never notice it. When it fails, your entire system can become unstable.

Common nvlddmkm.sys Error Messages

You’ll typically see these errors:

VIDEO_TDR_FAILURE (nvlddmkm.sys)

This happens when the graphics driver stops responding. Windows tries to recover it but fails, triggering a blue screen crash.

SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (nvlddmkm.sys)

The driver tried to execute an illegal operation. Usually means corrupted driver files or incompatible driver versions.

PAGE_FAULT_IN_NONPAGED_AREA (nvlddmkm.sys)

The driver tried to access memory that doesn’t exist or isn’t accessible. Points to memory conflicts or hardware problems.

DRIVER_IRQL_NOT_LESS_OR_EQUAL (nvlddmkm.sys)

The driver attempted an operation at an incorrect priority level. Often caused by driver conflicts or outdated drivers.

Why nvlddmkm.sys Errors Happen

Understanding the cause helps you fix it faster.

Outdated or Corrupted Graphics Drivers

NVIDIA releases driver updates monthly. Old drivers can’t handle new games, Windows updates, or security patches. Corrupted driver files from incomplete installations or hard drive errors cause system instability.

Overheating Graphics Card

High temperatures make your GPU unstable. When the chip overheats, it sends bad data through the driver. The nvlddmkm.sys file can’t process corrupted instructions and crashes.

Normal GPU temperatures during gaming: 65-85°C. Anything above 90°C causes problems.

Hardware Conflicts

Multiple programs trying to control your GPU simultaneously create conflicts. RGB lighting software, overclocking tools, and monitoring programs all access the same driver. Too many hands in the pot causes crashes.

Faulty Graphics Card Hardware

Physical defects in your GPU chip or video memory cause data errors. The driver receives garbage data and fails. This is less common but happens with aging cards or manufacturing defects.

Windows Update Conflicts

Windows 10 and 11 automatically update drivers. Microsoft’s generic NVIDIA drivers sometimes conflict with NVIDIA’s official drivers. You end up with two competing driver versions fighting for control.

Power Supply Issues

Insufficient or unstable power delivery starves your graphics card. When the GPU doesn’t get enough power, it malfunctions. The driver detects the problem and crashes to protect hardware.

How to Fix nvlddmkm.sys Errors: Step by Step Solutions

Start with the simplest fixes first. Move to advanced solutions only if basic methods fail.

Solution 1: Clean Install Latest NVIDIA Drivers

This fixes 70% of nvlddmkm.sys problems.

Step 1: Download Display Driver Uninstaller (DDU) from Wagnardsoft. This tool completely removes all traces of old drivers.

Step 2: Download the latest NVIDIA driver for your specific graphics card from NVIDIA’s driver page. Write down your exact GPU model first.

Step 3: Boot Windows into Safe Mode. Press Windows key + R, type “msconfig”, hit Enter. Go to Boot tab, check Safe Boot, select Minimal, click OK. Restart.

Step 4: Run DDU in Safe Mode. Select NVIDIA from the device type dropdown. Click “Clean and Restart.”

Step 5: After restart, install the new NVIDIA driver you downloaded. Choose Custom installation, check “Perform clean installation.”

Step 6: Restart your computer normally.

Solution 2: Adjust TDR Delay Settings

Windows has a Timeout Detection and Recovery feature that kills unresponsive drivers. Sometimes it’s too aggressive.

Step 1: Press Windows key + R, type “regedit”, press Enter.

Step 2: Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers

Step 3: Right click in the right pane, select New > DWORD (32-bit) Value. Name it “TdrDelay”.

Step 4: Double click TdrDelay, select Decimal, enter “10”. Click OK.

Step 5: Create another DWORD called “TdrLevel” with value “0”.

Step 6: Restart your computer.

This gives your driver more time to respond before Windows kills it.

Solution 3: Check GPU Temperature and Clean Your System

Overheating causes most hardware-related driver crashes.

Step 1: Download HWMonitor or MSI Afterburner to monitor temperatures.

Step 2: Run a graphics-intensive game or benchmark for 15 minutes.

Step 3: Check your GPU temperature. If it exceeds 85°C consistently, you have cooling problems.

Step 4: Shut down your PC. Unplug power. Open the case.

Step 5: Use compressed air to clean dust from GPU fans, heatsink fins, and case fans. Dust blocks airflow.

Step 6: Ensure all case fans work. Replace dead fans.

Step 7: Check that GPU fans spin when system is under load. If they don’t, the fan connector is loose or fans are broken.

Solution 4: Disable Hardware Acceleration in Applications

Some programs conflict with GPU drivers through hardware acceleration.

For Web Browsers:

Chrome: Settings > System > disable “Use hardware acceleration when available”

Firefox: Settings > General > Performance > uncheck “Use recommended performance settings” > uncheck “Use hardware acceleration when available”

Edge: Settings > System > disable “Use hardware acceleration when available”

For Discord:

User Settings > Advanced > disable “Hardware Acceleration”

For Other Apps:

Check video settings or preferences for hardware acceleration options and disable them temporarily.

Test if crashes stop. If they do, the problem is application-specific conflict.

Solution 5: Adjust Graphics Card Power Settings

Power management features can cause instability.

Step 1: Right click desktop, select NVIDIA Control Panel.

Step 2: Go to Manage 3D Settings.

Step 3: Under Global Settings, find “Power management mode.”

Step 4: Change it to “Prefer maximum performance.”

Step 5: Click Apply.

Step 6: Go to Windows Power Options. Search “power plan” in Windows search.

Step 7: Select High Performance plan. If you don’t see it, click “Show additional plans.”

This prevents the GPU from downclocking during transitions, which can cause driver hiccups.

Solution 6: Test Graphics Card in Another System

This determines if you have hardware failure.

Step 1: If possible, install your graphics card in a friend’s computer.

Step 2: Run demanding games or benchmarks for several hours.

Step 3: If crashes follow the card to the new system, your GPU has hardware problems.

Step 4: If the card works fine in another system, the problem is elsewhere in your computer.

Check motherboard PCIe slot, power supply, or RAM.

Solution 7: Update or Roll Back Windows

Sometimes Windows updates break driver compatibility.

To Update:

Settings > Windows Update > Check for updates. Install everything available.

To Roll Back:

Settings > Windows Update > Update history > Uninstall updates. Remove the most recent update installed before crashes started.

Advanced Troubleshooting Methods

Try these if basic solutions failed.

Check for Conflicting Software

These programs commonly conflict with NVIDIA drivers:

• EVGA Precision X
• MSI Afterburner (occasionally)
• ASUS GPU Tweak
• RGB control software (Corsair iCUE, Razer Synapse)
• Screen recording software (OBS can conflict with some driver versions)

Uninstall them one at a time. Test after each removal.

Test System Memory

Faulty RAM causes random crashes that look like driver problems.

Step 1: Type “Windows Memory Diagnostic” in Windows search.

Step 2: Select “Restart now and check for problems.”

Step 3: Let the test complete. It takes 20+ minutes.

Step 4: Check results after restart. If errors appear, you have bad RAM.

Replace faulty memory modules.

Scan for Malware

Some malware interferes with system drivers.

Step 1: Download Malwarebytes free version.

Step 2: Run a full system scan.

Step 3: Remove any threats found.

Step 4: Restart and test.

Check Event Viewer for Details

Windows logs crash information that helps identify patterns.

Step 1: Press Windows key + X, select Event Viewer.

Step 2: Navigate to Windows Logs > System.

Step 3: Look for Error entries around the time of crashes.

Step 4: Click on errors. Look for details mentioning nvlddmkm.sys.

Step 5: Note any other drivers or services mentioned alongside nvlddmkm.sys. These might be contributing factors.

Disable NVIDIA Telemetry Services

Background telemetry services sometimes interfere with driver stability.

Step 1: Press Windows key + R, type “services.msc”, press Enter.

Step 2: Find these services:

• NVIDIA Telemetry Container
• NVIDIA Display Container LS

Step 3: Right click each one, select Properties.

Step 4: Change Startup type to “Disabled.”

Step 5: Click Stop if the service is running.

Step 6: Restart your computer.

Prevention: How to Avoid Future nvlddmkm.sys Errors

Keep Drivers Updated

Check for new NVIDIA drivers monthly. Enable GeForce Experience notifications for driver updates.

Monitor Temperatures

Keep GPU temps below 80°C during gaming. Clean dust every 3-6 months.

Use Quality Power Supply

Ensure your PSU provides adequate wattage for your GPU. Add 150-200 watts above your system’s calculated requirement.

Avoid Driver Beta Versions

Stick with WHQL certified drivers for stability. Beta drivers work for testing but cause problems in daily use.

Update Windows Regularly

Keep Windows current to maintain driver compatibility. Enable automatic updates.

When to Replace Your Graphics Card

Sometimes the GPU itself is dying. Replace it if:

• Errors persist after trying all solutions
• Artifacts appear on screen (colored dots, lines, distortions)
• Card works in other systems but crashes in yours indicate motherboard problems, not GPU
• GPU is 5+ years old and errors started recently
• Temperature exceeds 95°C even with clean cooling

Error Comparison

Error Code	Main Cause	Quick Fix
VIDEO_TDR_FAILURE	Driver timeout	Clean driver reinstall
SYSTEM_THREAD_EXCEPTION	Corrupted driver	DDU + fresh install
PAGE_FAULT_IN_NONPAGED_AREA	Memory conflict	Test RAM, update drivers
DRIVER_IRQL_NOT_LESS_OR_EQUAL	Driver conflict	Remove overclocking software

Driver Version Stability Guide

Driver Type	Stability	Best For
Game Ready Driver	Medium-High	New game releases
Studio Driver	Highest	Content creation work
Beta Driver	Low-Medium	Testing only
WHQL Certified	Highest	General use

Frequently Asked Questions

Is nvlddmkm.sys a virus?

No. This file is a legitimate NVIDIA driver component. It’s not malware. However, viruses sometimes disguise themselves with similar names. Check the file location. The real file is always in C:\Windows\System32\drivers. If you find it elsewhere, scan with antivirus software.

Can I delete nvlddmkm.sys to fix errors?

Never delete this file manually. Without it, your graphics card won’t work. Windows won’t display properly. Instead, use Display Driver Uninstaller to remove drivers correctly, then reinstall fresh drivers. DDU removes nvlddmkm.sys safely during the uninstall process.

Why do nvlddmkm.sys errors happen during gaming?

Gaming puts maximum load on your GPU. This exposes driver instability, overheating, or hardware defects that don’t appear during normal use. The driver processes thousands of instructions per second during gaming. Any weakness causes crashes. Update drivers and check temperatures first.

How do I know if my graphics card is failing?

Physical GPU failure shows these signs: visual artifacts on screen, crashes in multiple games, errors persist after clean driver install, excessive fan noise, GPU temperature exceeds 95°C, system won’t POST with GPU installed. If you see multiple symptoms, the card likely needs replacement.

Does disabling NVIDIA services fix nvlddmkm.sys errors?

Only disable telemetry services. Never disable critical NVIDIA Display services. Disabling the wrong services breaks your graphics completely. Telemetry services (NVIDIA Telemetry Container) can be disabled safely as they only collect usage data. This sometimes reduces crashes caused by service conflicts.

Summary

The nvlddmkm.sys file controls your NVIDIA graphics card. Errors with this file cause blue screens and system crashes. Most problems stem from outdated drivers, overheating, or software conflicts.

Start fixing the issue by doing a clean driver installation with DDU. This solves 70% of cases. If that doesn’t work, check your GPU temperatures and clean dust from your system. Adjust TDR timeout settings to give the driver more recovery time.

Disable hardware acceleration in browsers and apps that conflict with GPU drivers. Update Windows and check for malware. Test your RAM if random crashes continue.

Replace your graphics card only after exhausting all software solutions. Most nvlddmkm.sys errors are fixable without buying new hardware.

Keep your system cool, drivers updated, and avoid running too many GPU control programs simultaneously. These preventive measures stop most future errors.