How to Fix “KMODE_EXCEPTION_NOT_HANDLED” in Windows 11

Disable Fast Startup

5 STEPS EASY 2 MIN

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METHOD

Method 1

Overview

Fast Startup speeds up boot time but may cause driver conflicts.

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Next Method

Open Run Dialog

Press Win + R, type control, and hit Enter.

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Step 1 of 5

Step 2

Open Power Options

Click Power Options → Choose what the power buttons do.

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Step 2 of 5

Change Power Settings

Select Change settings that are currently unavailable.

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Disable Fast Startup

Uncheck Turn on fast startup (recommended).

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Step 4 of 5

Save and Restart

Click Save changes and restart your PC.

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Step 5 of 5

Update/Roll Back Drivers

5 STEPS EASY 2 MIN

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METHOD

Method 2

Overview

Faulty or outdated drivers often cause this BSOD error.

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Open Device Manager

Press Win + X and select Device Manager.

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Step 1 of 5

Expand Device Categories

Expand Network adapters, Display adapters, or System devices.

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Step 2 of 5

Update Driver

Right-click the problematic driver and choose Update driver → Search automatically for drivers.

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Step 3 of 5

Roll Back Driver

To roll back a faulty driver: Right-click it and select Properties → Driver tab.

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Step 4 of 5

Restart After Rollback

Click Roll Back Driver (if available) and restart your PC.

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Step 5 of 5

Repair System Files

2 STEPS EASY 2 MIN

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METHOD

Method 3

Overview

Windows system files may be corrupted, leading to crashes.

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Open Command Prompt

Press Win + S, type cmd, and choose Run as administrator.

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Step 1 of 2

Run SFC Scan

Type sfc /scannow, wait for the scan to complete, and restart your PC.

If SFC doesn’t fix the issue, open Command Prompt as administrator and type DISM /Online /Cleanup-Image /RestoreHealth, then restart your PC.

Method 3 of 10

Step 2 of 2

Disable Overclocking

4 STEPS EASY 2 MIN

4/10

METHOD

Method 4

Overview

Overclocking your CPU or RAM can cause crashes and BSOD errors.

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Next Method

Enter BIOS/UEFI

Restart your PC and press F2, DEL, or ESC during boot to enter BIOS.

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Step 1 of 4

Locate Overclocking Settings

Find the overclocking or CPU/RAM settings in BIOS.

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Reset Speeds

Reset CPU and RAM speeds to default values.

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Save and Exit BIOS

Save changes and exit BIOS.

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Step 4 of 4

Test RAM for Errors

4 STEPS EASY 2 MIN

5/10

METHOD

Method 5

Overview

Faulty RAM can trigger the KMODE_EXCEPTION_NOT_HANDLED error.

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Next Method

Open Memory Diagnostic Tool

Press Win + R, type mdsched.exe, and press Enter.

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Step 1 of 4

Restart and Scan

Select Restart now and check for problems.

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Step 2 of 4

Check for Errors

Windows will scan your RAM and restart your PC.

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Step 3 of 4

Replace Faulty RAM

If memory errors are found, consider replacing your RAM module.

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Step 4 of 4

Uninstall Conflicting Software

3 STEPS EASY 2 MIN

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METHOD

Method 6

Overview

Some third-party apps, especially antivirus or system utilities, may interfere with Windows.

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Next Method

Open Apps and Features

Press Win + X and select Installed App.

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Step 1 of 3

Locate Conflicting Software

Find the recently installed software causing issues.

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Step 2 of 3

Uninstall the Program

Click Uninstall, then restart your PC.

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Step 3 of 3

Reset BIOS

3 STEPS EASY 2 MIN

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METHOD

Method 7

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Next Method

Enter BIOS/UEFI

Restart your PC and press F2, DEL, or ESC during boot to enter BIOS.

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Step 1 of 3

Load Default Settings

Look for Load Default Settings or Reset to Default in the BIOS.

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Save Changes and Exit BIOS

Save changes and restart your PC.

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Step 3 of 3

Perform Clean Boot

6 STEPS EASY 2 MIN

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METHOD

Method 8

Overview

A Clean Boot helps detect whether a background program is causing the issue.

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Open System Configuration

Press Win + R, type msconfig, and hit Enter.

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Step 1 of 6

Hide Microsoft Services

Go to the Services tab and check Hide all Microsoft services.

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Step 2 of 6

Disable All Non-Microsoft Services

Click Disable all.

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Step 3 of 6

Disable Startup Apps

Go to the Startup tab and click Open Task Manager, then disable all startup apps.

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Step 4 of 6

Restart PC

Restart your PC and check if the issue is resolved.

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Step 5 of 6

Identify Problematic App

If the error disappears, re-enable startup programs one by one to find the problematic one.

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Step 6 of 6

Install Windows Updates

3 STEPS EASY 2 MIN

9/10

METHOD

Method 9

Overview

Microsoft frequently releases patches to fix BSOD issues.

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Next Method

Open Settings

Press Win + I to open Settings.

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Step 1 of 3

Check for Updates

Go to Windows Update and click Check for updates.

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Step 2 of 3

Install Updates

Install any available updates and restart your PC.

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Step 3 of 3

Reset Windows

4 STEPS EASY 2 MIN

10/10

METHOD

Method 10

Overview

If nothing works, resetting Windows might be necessary.

Method 10 of 10

Open Settings

Open Settings → System → Recovery.

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Step 1 of 4

Reset this PC

Click Reset this PC under Recovery options.

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Step 2 of 4

Choose Reset Option

Choose Keep my files (to save personal data) or Remove everything (for a full reset).

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Step 3 of 4

Follow On-Screen Instructions

Follow the instructions to complete the reset.

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Step 4 of 4

Additional Tips

Driver-Specific Errors: If the BSOD names a driver (e.g., nvlddmkm.sys), update/reinstall it manually from the manufacturer’s website.

Hardware Checks: Use tools like CrystalDiskInfo (for storage) or HWInfo (for overall diagnostics) if errors persist.

Avoid Third-Party Tools: Manual driver updates via OEM sites are safer than automated tools.

How to Fix “KMODE_EXCEPTION_NOT_HANDLED” in Windows 11

Deepak Yadav

Backup Data

Check for Recent Changes

Note the Error Message

Disable Fast Startup

Update/Roll Back Drivers

Repair System Files

Disable Overclocking

Test RAM for Errors

Uninstall Conflicting Software

Reset BIOS

Perform Clean Boot

Install Windows Updates

Reset Windows

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How to Fix “KMODE_EXCEPTION_NOT_HANDLED” in Windows 11

Deepak Yadav

Prerequisites

Backup Data

Check for Recent Changes

Note the Error Message

Disable Fast Startup

Update/Roll Back Drivers

Repair System Files

Disable Overclocking

Test RAM for Errors

Uninstall Conflicting Software

Reset BIOS

Perform Clean Boot

Install Windows Updates

Reset Windows

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How to fix AutoHotkey (AHK) Not Working in Windows 11

Quick Fix: Restore the Missing Menu Bar Not Showing in Windows 11

Quick Fix for Nearby Sharing Not Working on Windows 11

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How to fix Next & Previous Buttons Not Working in Windows 11