How to Fix Kmode_exception_not_handled Error in Windows 10

The Kmode_exception_not_handled error is a common Blue Screen of Death (BSOD) issue that Windows 10 users often encounter. It typically indicates a problem with device drivers, hardware conflicts, or corrupted system files, which can disrupt your work and lead to data loss if not addressed promptly. Fortunately, there are several effective methods to troubleshoot and resolve this error, restoring your system's stability and performance. In this guide, we'll walk you through step-by-step solutions to fix the Kmode_exception_not_handled error in Windows 10.

How to Fix Kmode_exception_not_handled Error in Windows 10

Identify the Cause of the Error

Before diving into fixes, it's helpful to understand what might be causing the Kmode_exception_not_handled error. Common causes include:

• Outdated or incompatible device drivers
• Corrupted system files
• Hardware conflicts or failing hardware components
• Recent software or driver updates
• Malware infections

Knowing the cause can help you target your troubleshooting efforts effectively. You can check the specific error details by viewing the BSOD crash dump files or using diagnostic tools like Event Viewer.

Update Device Drivers

Device drivers are crucial for hardware functionality. Outdated or incompatible drivers often trigger the Kmode_exception_not_handled error. To update drivers:

1. Press Windows + X and select Device Manager.
2. Navigate through categories to find the device with a yellow warning icon or suspect drivers.
3. Right-click on the device and choose Update driver.
4. Select Search automatically for updated driver software.
5. Follow the prompts to install any available updates.

If Windows cannot find new drivers, visit the device manufacturer's website to download the latest drivers manually.

Note:

• For graphics cards, visit NVIDIA, AMD, or Intel's official websites.
• For motherboard chipsets, visit your motherboard manufacturer's site.

Perform Windows Update

Keeping Windows 10 updated ensures that bugs and security vulnerabilities are patched, which can prevent BSOD errors like Kmode_exception_not_handled. To check for updates:

1. Click on Start and open Settings.
2. Select Update & Security.
3. Click on Windows Update in the sidebar.
4. Press Check for updates and install any available updates.

Restart your system after updates are installed to apply changes.

Run System File Checker (SFC) and Deployment Image Servicing and Management (DISM)

Corrupted system files can cause BSOD errors. Running SFC and DISM tools can repair these files:

Run SFC:

1. Open the Start menu, type cmd, right-click Command Prompt, and select Run as administrator.
2. Type sfc /scannow and press Enter.
3. Wait for the scan to complete. If issues are found, SFC will attempt to fix them automatically.

Run DISM:

1. In the same Command Prompt window, type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
2. Allow the process to finish, which may take several minutes.
3. Restart your computer afterward.

This combination often resolves underlying system corruption that causes BSOD errors.

Check for Hardware Issues

Hardware problems, such as failing RAM or hard drives, can trigger the Kmode_exception_not_handled error. To diagnose hardware issues:

• Run Windows Memory Diagnostic: Type Windows Memory Diagnostic into the Start menu and select it. Choose Restart now and check for problems.
• Test your hard drive: Use tools like CHKDSK:

chkdsk /f /r C:

Run this command in an elevated Command Prompt. It will scan and repair errors on your drive.

• If hardware problems are detected, consider replacing the faulty component.

Uninstall Recently Installed Software or Drivers

If the error started after a recent software or driver update, removing the update may resolve the issue:

1. Open Settings > Apps.
2. Locate recently installed applications and uninstall them.
3. To uninstall recent driver updates, go to Device Manager, right-click the device, select Uninstall device, and restart your PC.

This helps eliminate the possibility that new software is causing conflicts.

Disable Fast Startup

Fast Startup can sometimes interfere with system stability, leading to BSOD errors. To disable it:

1. Open Control Panel and go to Power Options.
2. Click on Choose what the power buttons do.
3. Select Change settings that are currently unavailable.
4. Uncheck Turn on fast startup (recommended).
5. Click Save changes and restart your computer.

Perform a System Restore

If the error persists, reverting your system to a previous working state can help. To perform a System Restore:

1. Type System Restore into the Start menu and select Create a restore point.
2. Click on System Restore and follow the wizard.
3. Select a restore point created before the issue started.
4. Complete the process and restart your PC.

This reverts system files and settings to a previous state, potentially resolving the BSOD.

Reset or Reinstall Windows 10

If all else fails, resetting Windows 10 can fix deep-seated issues causing the error. To reset your system:

1. Open Settings > Update & Security > Recovery.
2. Click on Reset this PC.
3. Choose to keep your files or remove everything for a clean install.
4. Follow the on-screen instructions to complete the process.

Note: Back up important data before proceeding, as resetting may delete personal files.

Key Takeaways for Resolving Kmode_exception_not_handled Error

In summary, fixing the Kmode_exception_not_handled error involves a systematic approach:

• Updating device drivers and Windows system files
• Running diagnostic tools to identify hardware issues
• Uninstalling recent software or driver updates that may cause conflicts
• Disabling problematic features like Fast Startup
• Using System Restore to revert to a stable configuration
• Resetting Windows if necessary

By following these steps diligently, you can effectively troubleshoot and eliminate this BSOD error, ensuring your Windows 10 system runs smoothly and reliably.