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System_Thread_Exception_Not_Handled on Windows 10/11, Fixed Now

How do you fix system_thread_exception_not_handled nvlddmkm.sys in Windows 10 or Windows 11? Your computer may display system thread exception not handled blue screen error and stuck in Windows boot loop. This tutorial shows you how to fix system_thread_exception_not_handled without data loss.

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Table of Contents

How to fix system_thread_exception_not_handled issue in 6 ways:

Workable Solutions Step-by-step Troubleshooting
Fix 1. Boot Into Safe Mode   Click on "Start". While pressing the Shift button on your keyboard, click on "Restart"...Full steps
Fix 2. Uninstall Incompatible Programs  Click on the start menu and go to "Settings". The above screen will appear. Go into "Apps"...Full steps
Fix 3. Uninstall or Upgrade Faulty Driver  Click on the Start menu and search for the "Device Manager". Once it appears, click on it...Full steps
Fix 4. Repair System Files  Launch the command prompt through the Start menu and run it as an administrator...Full steps
Fix 5. Perform Startup Repair  Click on "Troubleshoot" and "Advanced options". Click on "Startup Repair"...Full steps
Fix 6. Perform System Restore  Go to "Settings" and click on "Updates & Security". Now, click on the "Recovery" option...Full steps

Often times windows users face the common error: system_thread_exception_not_handled (nviddmkm.sys or atikmpag.sys). This can happen with any Windows 10/11 user for a lot of reasons for example, because of outdated drivers.

This error can occur all of a sudden on your computer or laptop screen while using it. Also, the same "system_thread_exception_not_handled Windows 10" error can occur once you turn on your system. Some users even call it a death screen as they assume their Windows OS is all done. 

In reality, there are some quick fixes to this solution. In this article, we will discuss how to fix system_thread_exception_not_handled nvlddmkm.sys error on Windows 10/11. 

how to fix system thread exception not handled issue

What Does System Thread Exception Not Handled Mean 

This error means that an exception has been generated by the system thread, which the error handler is unable to handle.  

A variety of factors cause this error, but the most frequent offender is a device driver. When a driver becomes outdated or damaged, it may cause difficulties with your system. 

system thread exception not handled issue

Another possible source of this problem is a faulty system file. System files are essential for Windows to function correctly, and if they become damaged, the result may be numerous problems. For example, this error might occur if there's a problem with your Registry or Winsock files. You can fix this error with various methods. 

System Thread Exception Not Handled Error Causes 

Now, this system error can occur because of many reasons. Below are some of those reasons. 

Corrupt Files 

Your corrupt system files are the number one reason why such an error can ruin your experience. So, in this regard, it is best to fix those corrupt files (More on this later). With this approach, you can get rid of this blue death screen. 

Issue with a Running Background Program 

When you see the error message "system_thread_exception_not_handled," a problem occurs with one of the programs running in the background. This program is responsible for tasks like drawing graphics and playing sound. 

Malfunctioning Device Driver 

The "system_thread_exception_not_handled" error is generally caused by a malfunctioning device driver. A device driver is a program that allows your computer to communicate with hardware devices. When there is an issue with a device driver, the system thread may fail, resulting in the error message. 

Solutions to Solving System Thread Exception Not Handled in Windows 10/11 

Now for the "system_thread_exception_not_handled Windows 10" error, there are some fixes that you can implement. Here we will be sharing a total of 6 solutions to this common error. You can opt for any of these to get rid of this error. So, let us take a look at these fixes. 

Fix 1. Boot Into Safe Mode 

So, one solution to this error is to get into your Pc's safe mode. Now, before we dive into it, we have to understand the importance of this safe mode. The safe mode in your system is the mode that lets you find out the possible causes of any unexpected Windows error. 

In this case, we are trying to fix the "system_thread_exception_not_handled Windows 10" error. So, first, we will have to boot our system into safe mode. Here is how you can do this. 

Step 1. Click on "Start". While pressing the Shift button on your keyboard, click on "Restart" from the Start menu. 

Step 2. The following screen should appear. It is the Windows RE (recovery environment screen). From here, you have to click on "Advanced options". 

Step 3. Now click on the "Startup Settings" to view the available booting options.   

Step 4. From here, click on "Restart".  

restart your Windows in safe mode

Step 5. Once the Windows restart, it will give you the following options to boot the system. Click on option no 4, "Enable safe mode" to boot your system in safe mode. 

enter safe mode

This way, you can boot your system in safe mode. Note that some of the fixes require you to enable your Windows in Safe Mode. So, this step is a must to do for some of the fixes to the error we are trying to get rid of. 

Fix 2. Uninstall Incompatible Programs 

The system thread exception error also sometimes occurs because of an incompatible program installed. Now, in most cases, a user doesn't have an idea that a certain program in their windows 10/11 can cause such unexpected errors. 

So, you have to uninstall that particular program creating this issue. Usually, a recently installed software or an application is the culprit here. So, uninstall that specific application first. To do so, simply follow these steps.  

Step 1. Click on the start menu and go to "Settings". The above screen will appear. From here, you have to go into "Apps". 

Step 2. From the list of installed apps, choose the program that you have recently installed. Click on it and choose "Uninstall". 

uninstall app

So, this way, you can easily uninstall the recently installed program on your Windows 10/11. 

Fix 3. Uninstall or Upgrade Faulty Driver 

The recently updated or some faulty drivers can also cause the system_thread_exception_not_handled error in windows 10/11. As we discussed in the case of the recently installed program, the recently updated driver can also cause your windows to behave like this. 

So, to fix this issue, you have to uninstall or upgrade that faulty driver. 

Step 1. Click on the Start menu and search for the "Device Manager". Once it appears, click on it.  

Step 2. The Device Manager will show all the drivers installed in your Windows 10/11. From here, you have to figure out the faulty or recently installed driver. 

open device manager

Step 3. Right-click on the faulty driver, and you will get a few options. From this option, choose "Uninstall". 

uninstall driver

Step 4. And that's it. Your faulty driver is no longer a part of your Windows OS. 

Fix 4. Check and Repair Problematic System Files 

We discussed how a faulty program and a driver could cause such errors. Now, let us explain to you another reason for such errors. Your system's problematic files can also cause this issue. So, the best fix in this regard is to repair those faulty files. 

Step 1. Launch the Command Prompt through the Start menu and run it as an administrator. 

run cmd as administrator

Step 2. Now type DISM/ Online /Cleanup Image /ScanHealth. Press the enter button to run this command. 

run DISM command

Step 3. Once you have entered this command, you have to wait a bit. During this time, Windows will automatically repair all those corrupted files. 

Fix 5. Perform Startup Repair 

Another way to solve this common error is to perform startup repair. This repair method is easy and will repair those broken, old, and malfunctioning files in your system. So, here is how to perform a startup repair. 

Step 1. You have to go to your Windows Advanced Startup options to perform a startup repair. To enter into this mode, you just have to press F11 as soon as your system boots. Click on "Troubleshoot" to proceed further.  

Step 2. When you have accessed the Advanced Startup options, you have to click on "Advanced options". 

Step 3. From here, click on "Startup Repair". The windows will ask you to choose the account name and its password. Just enter that. The windows will start repairing those corrupted files for your ease. 

system repair

Fix 6. Perform System Restore 

If none of the above-mentioned methods work for you, you can opt for the system restoring option. Here are the steps to follow.  

Step 1. Go to "Settings" and click on "Updates & Security". Now, click on the "Recovery" option.  

Step 2. You will be directed to the Advanced startup of Windows. Click "Restart now".  

restart now

Step 3. Now, click on "System Restore". Again, the windows will ask you to choose the account name and its password. Just enter that. The system will start to restore.  

system restore

How to Restore Data from a Computer That Cannot Boot Windows 10/11 

When the BSOD system_thread_exception_not_handled problem error occurs or other boot issues appear, you won't be able to access your systems' files and data stored in them. Do not worry, and you can get out of this situation as well. Reliable data recovery software such as EaseUS Data Recovery Wizard can help you solve this issue. 

 Download for Win Recovery Rate 99.7%
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With this data recovery program, you can recover more than 100 file types from all the common storage devices with ease. It enables you to recover data from a PC/laptop hard drive that won't boot in a WinPE environment. EaseUS advanced data recovery software also supports NAS data recovery and Linux data recovery. 

Now, download this 100% safe and secure data recovery software to restore files efficiently. 

Step 1. Create a bootable disk

Prepare an empty USB. If you have important data on it, copy the data to another device. When you create a bootable disk, the data on the USB will be erased. EaseUS Data Recovery Wizard WinPE Edition will help you create a bootable disk.

Connect the USB drive to PC, launch EaseUS Data Recovery Wizard WinPE Edition. Select the USB drive and click "Create" to create a bootable disk.

create a bootable disk with easeus

Step 2. Boot from the bootable USB

Connect the bootable disk to PC that won't boot and change your computer boot sequence in BIOS. For most users, it works well when they restart their computer and press F2 at the same time to enter BIOS.

Set to boot the PC from "Removable Devices" (bootable USB disk) or "CD-ROM Drive" (bootable CD/DVD) beyond Hard Drive. Press "F10" to save and exit.

Step 3. Recover data from a hard drive that won't boot

When you boot from the USB, you can run EaseUS Data Recovery Wizard from the WinPE bootable disk. Select the drive you want to scan to find all your lost files. 

selet the drive

Click "Scan" to start the scanning process.

let the software scan the drive

Recover data from the computer or laptop. After the scan completed, you can preview all recoverable files, select the targeted files, and click the "Recover" button to restore your files. You'd better save all of the recovered data to another place to avoid data overwriting.

recover data from the computer 

Conclusion  

With more than 5 fixes, you know now how to fix system_thread_exception_not_handled nvlddmkm.sys error on windows 10/11. The reasons why this error occurs can be many. If any of the above-highlighted methods doesn't work for you, the Ease US Data Recovery Wizard is always there to rescue you. 

It can help you recover your data files on a fast and hassle-freeway. Its user interface is clean and straightforward. So, Download EaseUS Data Recovery Wizard today! 

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Updated by Cedric

Cedric Grantham is one of the senior editors of EaseUS who lives and works in Chengdu, China. He mainly writes articles about data recovery tutorials on PC and Mac and how-to tips for partition management. He always keeps an eye on new releases and likes various electronic products.

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