Fixed: System Thread Exception Not Handled Error

Windows user sometimes encounters System thread exceptions not handled errors. In this article, we will go through the details of this error and also find the methods which will help fix this error called system thread exception not handled. This article will include all such necessary precautions which will help in avoiding the issue and act as a protection shield for the windows. Let’s start to decode this driver malfunctioning error.

What is System Thread Exception Not Handled error?

The system thread exception not handled error indicates a crash of the system which is also known as is the blue screen of death error. This error may appear when you are installing windows on your computer. The reason behind the system thread exception not handling error is an old or outdated graphic driver. Mostly this error takes place when a user does not update the graphic driver.

Whenever the blue screen of death error[BSOD] occurs, a number may be displayed on the computer screen along with the stop code. But it will surely display the name of that particular file that caused the error known as system thread exception not handled.

One of the major reasons for this error is the Malware in your computer which can manipulate the graphic drivers. In simple words, when a system thread exception is not handled error is displayed on the computer screen it indicates that the system handler is unable to control the exception created by a particular system thread which ultimately leads to this particular error.

1. Meanings of different Stop Codes

Stop codes appear on the computer screen as and when the error comes in place. Different stop codes indicate different reasons, as a result of which the error was caused. A few of the stop codes are as follows:-

1. Nvlddmkm. sys

Stop code indicates the video card driver for the Nvidea kernel driver installed on a Windows computer.


User will face this error code when he/she connects the audio output device with the help of a USB port. Whenever a user does this, a unique driver comes in place.

3. Atikmdag.sys

This code shows up with the BSOD error message when the installed graphic drivers in the computer are quite old or not installed properly. The ATI km dig dot code indicates the system files for the graphics card driver.

4. dxgmms2.sys

This particular code indicates the error in the DirectX drivers and their system files.

5. Fltmgr.sys

These are the system files of the Microsoft file system filter manager. This stop code is usually displayed at the end of the system thread exception not handled error message.

6. Ntfs.sys

The system files for the Windows NT server are indicated by the stop code that is NTFS. A user gets to see this particular stop code when possibly there are errors or crashes related to this particular file.

How to Fix System Thread Exception Not Handled Error?

As promised, here I bring to you the methods or ways to help you to fix the error. Let’s look at this one by one.

1. Boot Into Safe Mode

In my view, the first and foremost step to fix this error is to boot into safe mode. When a user enables safe mode all such services and drivers automatically get disabled which are not useful to run Windows. A user can easily boot into safe mode by following some simple steps.

One can be into safe mode through settings from the sign-in screen or from a blank screen for following steps should be followed to boot into safe mode through settings.

Step1 – The first click on the start button to select settings

Step 2 – Go to update and security and then click on recovery.

Step 3 – In advanced startup click on restart now.

Step 4 – Choose an option screen that will appear when the PC restarts.

Step 5 – Now go to troubleshoot advanced settings options startup settings and click on restart

Step 6 – Lastly, when your PC finishes rebooting press F5 to boot the computer into safe mode.

2. Rollback or Reinstall Drivers

Sometimes rolling back or restoring the drivers can bring the errors to an end. To solve driver compatibility issues, a user needs to enter the windows to safe mode. Here is the stepwise tutorial for rolling back, re-installing, or updating drivers.

Step 1 – Press Windows + X keys to open the device manager.
Step 2 – Now update rollback or install drivers from here.

1. Update drivers

  • Right-click to select the driver by expanding the directory.
  • Now select search automatically for updated driver software.

2. Rollback drivers

  • Expand the directory and select properties by right-clicking.
  • Go to the Driver tab and click on rollback driver.
  • Select a reason for rollback and then click Yes.

3. Reinstall drivers

  • Firstly uninstall the device.
  • Now go to the manufacturer’s website to choose a compatible device and follow the necessary instructions to complete the installation process.

3. Restore the PC

If the system thread exception not handled error is not fixed by using all other methods then the last resort will be of restoring the system or PC. To restore the system to an earlier state, you just need to follow the given below steps.

Step 1 – Open the control panel after searching it from the start menu search bar.
Step 2 – Now search recovery in the control panel search bar and open it.
Step 3 – Open system restore by clicking it.

Step 4 – Click next to select a restore point from the displayed list.

Step 5 – At last click on finish.

Also Read: How To Post On Instagram From PC 2022?


All the necessary information regarding system thread exception not handled error such as meanings of different stop codes, ways to fix the error, stepwise process of fixing error among other things have been included in this article. Even after getting help from this article, you are unable to fix it you can write a mail to us or can leave a comment below. Hope you all will find this article helpful.

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