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How to Fix ntoskrnl.exe Latency Spikes Causing Performance Issues on Windows 10

If you have noticed your Windows 10 computer suddenly becoming slow or laggy, the ntoskrnl.exe latency spikes might be the reason. These spikes can cause performance issues, making your system feel unresponsive. Understanding and fixing this problem can help restore smooth and fast operation.

ntoskrnl.exe is a core Windows file responsible for many system functions, including memory and process management. When it causes latency spikes, it usually means something is interfering with normal operations.

This article will guide you through simple, step-by-step solutions to identify and fix ntoskrnl.exe latency spikes on your Windows 10 PC. No advanced technical skills are required.

Follow the instructions carefully, starting from the easiest checks to more detailed troubleshooting methods.

Quick Note

Before diving into fixes, make sure you have the following ready:

  • Administrator access: Most solutions require you to run tools or commands with admin rights.
  • Backup your data: Although these steps are safe, it’s always best to backup important files.
  • Windows updates: Ensure your system is updated to avoid compatibility issues.
  • Basic familiarity: You should be comfortable opening Task Manager, Command Prompt, and Device Manager.

Step 1: Check for High CPU Usage in Task Manager

First, you want to confirm if ntoskrnl.exe is actually causing the latency spikes by checking CPU usage.

  1. Press Ctrl + Shift + Esc to open Task Manager.
  2. Click on the Details tab.
  3. Look for ntoskrnl.exe in the list. It might be listed under “System” or as part of the kernel process.
  4. Check the CPU column to see if it uses an unusually high percentage for extended periods.

Why this matters: High CPU usage by ntoskrnl.exe suggests system-level problems like driver conflicts or hardware issues.

Step 2: Update Your Device Drivers

Outdated or faulty drivers often cause ntoskrnl.exe latency spikes. Keeping drivers updated ensures smooth communication between your hardware and Windows.

  1. Press Windows + X and select Device Manager.
  2. Expand categories such as Display adapters, Network adapters, and Sound, video and game controllers.
  3. Right-click on each device and select Update driver.
  4. Choose Search automatically for updated driver software.
  5. Follow the prompts to install any available updates.

If Windows doesn’t find updates, visit your hardware manufacturer’s website to download the latest drivers manually.

Step 3: Run Windows System File Checker

Corrupted or missing system files can cause ntoskrnl.exe errors. The System File Checker (SFC) tool scans and repairs these files automatically.

  1. Press Windows + S, type cmd, then right-click Command Prompt and select Run as administrator.
  2. In the Command Prompt window, type the following command and press Enter:
sfc /scannow

This process may take some time. Once finished, it will report if any corrupted files were repaired.

Step 4: Disable Unnecessary Startup Programs

Some programs running at startup can interfere with system files and cause latency spikes.

  1. Open Task Manager again (Ctrl + Shift + Esc).
  2. Go to the Startup tab.
  3. Look for programs you don’t need immediately after boot.
  4. Select them and click Disable.
  5. Restart your computer and observe if performance improves.

Disabling startup programs frees system resources and may reduce ntoskrnl.exe spikes.

Step 5: Check for Malware or Viruses

Malware can disguise itself as system files or disrupt system processes, causing latency issues.

  1. Open Windows Security by searching in the Start menu.
  2. Click on Virus & threat protection.
  3. Select Quick scan or Full scan for a deeper check.
  4. Remove any threats found according to the instructions.

Using a trusted third-party antivirus tool for a second opinion can also be helpful.

Step 6: Adjust Power Settings for Optimal Performance

Power plans can affect how Windows manages CPU and system tasks. Setting your PC to a high-performance plan can reduce latency.

  1. Press Windows + S, type Power & sleep settings, and open it.
  2. Click on Additional power settings on the right.
  3. Select the High performance power plan. If you don’t see it, click on Create a power plan and select High performance.

This setting allows your CPU to run at full speed, reducing delays caused by power-saving modes.

Step 7: Use LatencyMon to Identify Problem Drivers

If the above steps don’t help, you can use a free tool called LatencyMon to find which drivers cause latency spikes.

  1. Download LatencyMon from its official website.
  2. Run the program and click Start.
  3. Let it analyze for a few minutes while you use your computer normally.
  4. Check the report for drivers listed as causing high latency.
  5. Update or reinstall those drivers as needed.

This advanced tool helps pinpoint specific driver issues affecting ntoskrnl.exe behavior.

FAQs

What is ntoskrnl.exe?

ntoskrnl.exe stands for Windows NT Operating System Kernel. It is a critical system file responsible for managing hardware, system memory, and processes.

Can I delete or remove ntoskrnl.exe?

No. ntoskrnl.exe is essential for Windows to run. Deleting it will cause system failure and prevent Windows from booting.

Why does ntoskrnl.exe cause high latency?

High latency usually results from driver conflicts, hardware problems, corrupted system files, or malware interfering with kernel operations.

Is ntoskrnl.exe a virus?

ntoskrnl.exe itself is not a virus. However, some malware can disguise itself using this filename. Running antivirus scans helps rule out infections.

Will updating Windows fix ntoskrnl.exe issues?

Sometimes. Windows updates include fixes and driver updates that can resolve kernel-related performance problems.

When Nothing Works

If you have tried all the above steps and still experience latency spikes caused by ntoskrnl.exe, consider the following options:

  • Perform a clean boot: This starts Windows with minimal drivers and startup programs to identify software conflicts. You can find Microsoft’s guide on how to perform a clean boot on their support site.
  • Reset or reinstall Windows: As a last resort, resetting Windows or performing a clean installation can fix deep system issues.
  • Contact Microsoft Support: For persistent problems, reach out to official Microsoft support or a trusted technician.

Conclusion

ntoskrnl.exe latency spikes can significantly affect your Windows 10 PC’s performance, but most issues are fixable with basic troubleshooting. Checking CPU usage, updating drivers, scanning for malware, and adjusting power settings often resolve the problem.

For more complex cases, tools like LatencyMon help identify problematic drivers. Always keep your system and drivers updated and perform regular scans to maintain optimal performance.

By following these simple steps carefully, you can reduce or eliminate ntoskrnl.exe latency spikes and enjoy a smoother computing experience.

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