ndis.sys Blue Screen Fix Guide (Windows 10/11)

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How to Fix ndis.sys Blue Screen Errors in Windows 10/11

The ndis.sys file is a critical system driver in Windows responsible for managing network interface communication between your hardware and the operating system. When this file encounters issues it can trigger a Blue Screen of Death (BSOD) often with error codes like CRITICAL_PROCESS_DIED KERNEL_SECURITY_CHECK_FAILURE or IRQL_NOT_LESS_OR_EQUAL. This guide will help you diagnose and resolve these errors effectively.

Why Does ndis.sys Cause BSODs?

The ndis.sys driver can fail due to:

  • Corrupted or outdated network drivers: Outdated incompatible or corrupted drivers (e.g. Wi-Fi Ethernet) are the most common culprits.
  • Hardware conflicts: Faulty network adapters overclocked components or faulty RAM can trigger instability.
  • Malware or system corruption: Viruses or corrupted system files (e.g. from improper shutdowns) may affect the driver.
  • Windows updates: A recent update might introduce bugs affecting network functionality.
  • Driver conflicts: Conflicts between third-party drivers (e.g. VPN antivirus) and Windows components.

Step-by-Step Fixes for ndis.sys BSODs

1. Update or Reinstall Network Drivers

Outdated or corrupted drivers are a leading cause of ndis.sys-related crashes.

  • Uninstall current drivers:
    • Press Win + X then select Device Manager.
    • Expand Network adapters right-click your network card and choose Uninstall device.
    • Check the box for Delete the driver software for this device and confirm.
  • Download the latest drivers:
    • Visit your laptop/PC manufacturers support page (e.g. Dell HP) or the chipset manufacturers site (Intel Realtek).
    • Manually install the driver or use Windows Update to search for updates.

2. Run System File Checker (SFC) and DISM

Corrupted system files can trigger BSODs. Use these built-in tools to repair them:

DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow
  • Open Command Prompt as Administrator (search for “cmd” right-click and select Run as administrator).
  • Paste the first command above and press Enter. Wait for completion.
  • Run the second command (sfc /scannow) and restart your PC after it finishes.

3. Check for Disk Errors with CHKDSK

If file system corruption is suspected run:chkdsk C: /f /r

  • Open Command Prompt (Admin).
  • Paste the command above and press Enter. If prompted to schedule a scan on next reboot confirm.
  • Restart your PC to complete the scan.

4. Roll Back or Disable Problematic Drivers

If the BSOD started after a driver update:

  • Open Device Manager expand Network adapters right-click your card and select Properties.
  • Go to the Driver tab click Roll Back Driver if available.
  • If no rollback option exists note the driver version and reinstall a stable version from the manufacturers site.

5. Test for Hardware Issues

Faulty RAM or overheating can cause intermittent crashes:

  • Test RAM: Use Windows Memory Diagnostic:
    • Search for Windows Memory Diagnostics run the tool and follow prompts.
  • Check overheating: Monitor CPU/GPU temps using tools like MSI Afterburner. Ensure cooling fans are functional.

6. Disable or Update Antivirus Temporarily

Some security software (e.g. McAfee Norton) may conflict with ndis.sys:

  • Uninstall third-party antivirus via Settings > Apps > Installed apps.
  • Use Windows Defender temporarily to test for BSOD recurrence.

7. Perform a Clean Boot

A clean boot starts Windows with minimal drivers/services isolating the issue:

  • Press Win + R type msconfig and hit Enter.
  • Go to the Services tab check Hide all Microsoft services then click Disable all.
  • Go to the Startup tab click Open Task Manager disable all startup items and restart.
  • Test for BSODs. If none occur re-enable services/apps one by one to identify the culprit.

8. Restore from a System Restore Point

If the issue started recently restore Windows to a stable state:

  • Search for Create a restore point go to System Protection > System Restore.
  • Choose a restore point from before the BSODs began and follow prompts.

9. Check for Windows Updates

Microsoft often patches driver issues in updates:

  • Go to Settings > Update & Security > Windows Update then click Check for updates.
  • Install all optional and important updates including driver firmware updates.

10. Reinstall or Reset Windows (Last Resort)

If all else fails reset your PC while preserving files:

  • Go to Settings > Update & Security > Recovery then Reset this PC.
  • Choose Keep my files and follow the prompts.

FAQ: Common Questions About ndis.sys BSODs
Q: Can I safely ignore a one-time ndis.sys BSOD?

A: No. A single occurrence may indicate a temporary glitch but repeated crashes suggest deeper issues (e.g. hardware failure). Follow the steps above to resolve it.

Q: Will updating BIOS fix this?

A: Rarely but if your motherboards firmware is outdated check for a BIOS update on the manufacturers website. Proceed with cautionfollow their instructions carefully.

Q: Why does my Wi-Fi/Ethernet work fine sometimes?

A: Intermittent connectivity suggests hardware-level instability (e.g. loose cables) or driver conflicts. Test with a different cable/adapter to rule out physical issues.

Q: Can third-party tools like Driver Booster harm my system?

A: Some tools install unnecessary drivers worsening conflicts. Use only official manufacturer drivers and avoid “driver update” software unless from trusted sources.

Q: How do I check the exact BSOD error code?

A: Note the error details on the blue screen (e.g. 0x000000D1). Search online for the code + “ndis.sys” to find targeted fixes.

Final Notes

If BSODs persist after trying these steps consider hardware diagnostics (e.g. testing RAM with a known-good stick) or consulting a technician. ndis.sys-related crashes are often resolvable without data lossstart with driver updates and system file repairs before escalating to advanced solutions.

Last Updated: December 13 2025

Tested on: Windows 10 (22H2) & Windows 11 (23H2)

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