How to Fix “System Thread Exception Not Handled” Error on Windows 10

As we turn on the computer, it is an obvious expectation that it will turn on without fail and then run smoothly. When there is power and the turning on is done correctly, we find no reason for any glitches. But unfortunately, this is not always the case. If you are a Windows 10 user, you will often encounter an error called “System Thread exception not Handled.” This is especially common for users who are novices about the basic technicalities of their device.

If you are not aware of the different device drivers and do not keep them updated at times, often the blue screen of death appears. It can pop up right after you turn the device on or take some time of 10-15 seconds and then appear when the computer starts running.

Either way, it hinders any kind of functioning of the device. In this article, we have shared different ways in which you can get your device up and running even after facing the blue screen of death which is caused by the error, system_thread_exception_not_handled.

When you are well aware of the different ways in which you can sort this error, you can quickly get your device running and make sure the problem does not occur again. You do not need help from a professional when you can manage the basic technical faults independently.

What Does The “System Thread Exception Not Handled” error Mean?

System Thread Exception Not Handled

The system thread exception not handled error is a kind of error that we commonly find in computers with window 10. This error comes up on the Blue screen of Death when the drive of the computer crashes or stops working. If your computer gets this error it may take ten to fifteen to show up once your windows.

In some situations, the error occurs immediately after you fire up your computer. In this error, your system gets in a loop of rebooting, as a result, the user will not be able to use the computer at all.

When Does This Error Occur And Why Does It Happen?

 The System Thread error can occur due to various reasons. It can be because the driver you are using can be malfunctioning or it is an older version. Or in case your graphical driver is full of malware data which can cause an error. It is also ours occasionally if you are not using the appropriate graphical drive while running a programme. But the main reason why the system thread error occurs in your computer is when you boot your device from the restart and shut down.

There Is a File Name Attached To The Error Code: What Does It Mean?

The file name that comes attached with the error code is also a solution to resolve the error. The named file attached to the error code finds out the trouble-making graphical drive. Once you identify the malfunctioning drive it becomes easy to resolve your error completely. Here are the names of the graphical drive you commonly find attached to the error code.

Nvlddmkm. sys: this kernel drive belongs to Nvidia Windows. If you are facing some problem relating to the Nvidia Video card that means either the drive id installed incorrectly or it is an older version.

Atikmdag Sys: this graphic drive comes with an ATI video card. Belonging from the ATI Radeon family the AMD card graphic card of the drive is either outdated or not installed correctly.

Ntfs. sys: this file name belongs to the window NT server. The driver comes wireless and needs an adapter developed by the Broadcom corporation. If it is not installed properly your computer will show a system thread error.

Dxgmms2.sys: this filename is related to the associate driver. Designed for the NT server if the drive is outdated it may cause system thread error frequently.

5 Methods for Fixing “System Thread Exception Not Handled” on Windows 10 Systems

To solve the system thread exception not handled error, it is important to figure out the reason behind the problem. Once you recognize the source of the issue, you can quickly determine the best way to sort it out. The following are problems that are specific to windows 10 and hence users using this OS, would find these beneficial:

1. Detecting The Faulty Driver

System Thread Exception Not Handled

The system thread exception not handled windows 10 error is often caused when there is a defective driver in your device. The defect may occur due to hardware problems as well as for not updating the driver on time. But how to find out which driver is faulty? There are a few simple steps to doing this. They are as follows:

  • On your keyboard, press the windows+R. This would open the “run” dialogue box.
  • In the respective field enter “eventvwr” and then click on Enter.
  • Look for the option where it says “windows logs” and from there click on the drop-down menu.
  • Next click on the “system” which is there within the drop-down menu and you will get a log of all the recent activities on the device.
  • In this log, you will be able to find the system_thread_exception_not _handled error and also the driver with which it is associated.

Once you have found the driver, you will have to repair or format it to get rid of the trouble completely. You may even have to configure the driver altogether, whichever is feasible and essential in the situation. Such error may lead to loss of data since it happens abruptly and often the last resort is formatting the driver altogether.

2. Updating The Drivers or Rolling Back And Re-Installing

System Thread Exception Not Handled

The system thread exception not handled error often occurs when the driver is incompatible with the device. This is also caused when the driver is not updated and hence it is not in sync with the latest version of the OS.

The simplest way to solve the issue is to detect the driver with the problem and then update it. In case you already have the latest version of the driver, reinstalling it is the wisest decision. You can do this by typing “driver manager” in the search bar of the computer.

Another option is to hit the Windows+X and then select the “driver manager” option. Once this is done, you must follow the steps shared below:

  • In case you need to update the driver, go through the device list and then right-click on the hardware which will have a driver to find out the faulty one. Then check for the latest available update and start the update procedure. This is essential for several components of the device like audio devices, network adaptors, disk drives and more. Once you right-click and search the updates available, the latest option will be displayed for download and installation.
  • You can also roll back the drivers by going through the driver list and checking the properties of all the available drivers. Next, go to the Driver tab and then click on the “rollback” option. Once you have selected it, click on yes and the rollback procedure will be initiated.
  • Lastly, if you need to reinstall the driver, first it has to be uninstalled. Navigate to the driver’s manufacturers’ website and from there select the latest version of the driver compatible with our device. Download it and start the installation process manually.

 3. Renaming the Faulty Driver

When there is a system thread exception not handled error for any specific file name, then you can opt for renaming the driver to something else. The windows will fetch a copy of that and then reinstall it. To do this, however, you must know what hard drive is installed in your device, to begin with.

  • First, open the command prompt app which can be done by typing “cmd” into the search option for the computer.
  • In the command prompt box, type in C: and then click enter and then type cd windows\system32\drivers. After this click on Enter and then type in the command ren FILENAME.sys FILENAME.old. The option to replace the filename of the faulty driver that is listed with the error code will appear. 
  • You can assign a different name now and then type exit.
  • Restart the device so the changes take action.

 4. Repair any Faulty System Files

Often a corrupted system file affects the driver’s performance and leads to the system thread exception not handled error. However, they can be repaired by running the SFC and DISM repair programs available in Windows.

  • You can run SFC by opening the command prompt as an administrator and then going to the advanced option available in its list.
  • Next, enter “sfc/scannow” and then click on the enter key. This way all damaged, lost or changed system files will be repaired.

You can also run DISM to restore the health of the computer. This can be done by following the steps shared below:

  • Open the command prompt and then enter either of the following-
    • Exe /Online /Cleanup-image /Scanhealth
    • Exe /Online /Cleanup-image /Restorehealth
  • Hit enter and the health restoration will take place.

 5. Restore the PC to an early version

The last but not the least option is to restore the PC to an early version when you get the error system thread exception not handled. You will need a recovery drive or system repair disc for Windows for this purpose.

  • Put the system repair disc in the computer and then choose the preferred language.
  • Click on the repair option followed by troubleshooting and then the advanced option.
  • Next, choose the system restore option and follow the next steps as provided.

 How To Boot Into Safe Mode on Windows 10?

If your device is going through the reboot loop continuously you would prefer to stop the loop. To do that the first thing you have to do is reboot your device to safe mode. As one the reboot loop starts it is not possible to access your setting, so you will get a boot to the window recovery environment once you finish switching to safe mode.

  • Press hold your computer power button for 10 seconds. Once your device turns off, turn it on again in the same way.
  • Once your computer restarts, repeat the same process of turning it off and on by pressing the power button. Go on repeating this method until your computer starts fully and you get access to winRE.
  • Find the troubleshooting option from the menu and next choose the advance option then start-up setting and finally restart. After your device restarts press F5 to access safe mode.

 Frequently Asked Questions

 What does it mean that the system thread exception not handled?

The system thread exception not handled is an error that occurs on the Blue screen of Death. This error happens primarily due to the malfunctioning of the graphical drive, malfunctioning and using an outdated version.

What causes system service exception errors?

The system service exception occurs due to various reasons like.

  • Corrupted or malfunctioning system files
  • Outdated or older version of the drive
  • Interface error of graphic user
  • Wrongly installed drive

How do I fix the blue screen of death on Windows 10?

  • Remove any recently added hardware devices like the printer or webcam and restart your device
  • Run your computer for malware or virus scan to ensure a clean system
  • Uninstall all the latest installed window updates and install the latest update of windows

How do I fix system exceptions not handled?

  • Boot your device to safe mode
  • Find the files name of the drive that is causing the error
  • Rename the file at fault
  • Repair the system file using SFC and DISM
  • Use a system restore to restore your PC


The system_thread_exception_not_handled error is not uncommon but it can be very problematic when you do not know how to solve it. If you know the source of the problem, you can quickly rectify the issue. We have listed some of the common reasons behind the problem and hope these along with their solution would be helpful.

Now that you know the reasons behind the trouble, you can manage them quickly without seeking professionals for help. Once you master the solutions, you can efficiently handle the error at any time. Do note, the blue screen of death is a reversible problem provided the solution is implemented correctly. So, it is essential that you manage the trouble by following the correct steps.

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