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

System Thread Exception Not Handled Error is a BSOD or Blue Screen of Death. A BSOD is a dreaded blue screen amongst Windows users which causes their system to malfunction. A BSOD can be caused by various issues in your PC, from drivers not functioning properly to power supply issues. A System Thread Exception Not Handled BSOD is pretty easy, and we will show you how to do just that in this article.

What is System Thread Exception Not Handled Error?

“System Thread Exception Not Handled” is a common Windows 10 BSOD or Blue Screen of Death. This error can be more complicated than other BSODs since it can be caused due to one or more reasons. This error mainly occurs on Windows 10, 8.1, and 8; however, it may appear on other versions of Windows.

What causes System Thread Exception Not Handled?

A “System Thread Exception Not Handled” error can be caused by one or more drivers not functioning properly, so it is important to find the driver causing the issue. To fix the System Thread Exception Not Handled Error, follow the steps below:

How to Fix System Thread Exception Not Handled (2021)

1. Boot into Safe Mode to Fix System Thread Exception Not Handled

Boot into Safe Mode from Settings

1. Open Settings
2. Click on “Update and Security” then click on Recovery.
3. Under “Advanced Startup” click on Restart Now.
4. After your PC restarts you should get an Option screen.
5. Now, click on Troubleshoot > Advanced options > Startup Settings then click on Restart.
6. Press F5 when your system reboots press F5 to boot your computer in Safe Mode with Networking.

Boot into Safe Mode from the sign-in screen

1. While on the sign-in screen, click on the power button on the screen while holding down shift.
2. Then click on Restart.
3. After your PC restarts you should get an Option screen.
4. Now, click on Troubleshoot > Advanced options > Startup Settings then click on Restart.
5. Press F5 when your system reboots press F5 to boot your computer in Safe Mode with Networking.

Boot into Safe Mode from a blank screen

1. Press and hold your power button for 10-15 seconds till your PC shuts off.
2. Press the power button again to switch it on.
3. When the manufacturers logo appears, press and hold the power button again for 10-15 seconds to shut down your PC.
4. Now, switch it on again.
5. You PC should boot into Windows Recovery Environment.
6. Now, follow steps 4, 5, 6 from “Boot into Safe Mode from Settings”

2. How to Find the Driver Responsible for this Issue

Malfunctioning drivers mostly cause the System Thread Exception Not Handled error. To find the drive which is causing the error, follow the steps below:

1. Press Windows + R or open Run from the Start Menu.
2. In the dialog box, type “eventvwr”.
3. Expand the Windows Logs menu and select System.
   
4. Find and click on the log called system_thread_exception_not_handled to see the driver causing the issue.

3. Rollback, Update or Re-install Drivers

Depending on which driver caused the error, you may need to Rollback or Update, or Re-install the driver. For example, if you updated a driver recently, the error occurred, you may need to Rollback the driver.

How to Rollback drivers

1. Open Device Manager and find the driver causing the issue.
2. Now, expand the Driver menu and right-click the driver.
3. Now, click on Properties, under the “Driver” Tab click on “Roll back Driver”
   
4. Windows will now automatically Rollback the driver to its last available version.

How to Update Drivers

1. Open Device Manager and find the driver causing the issue.
2. Now, expand the Driver menu and right-click the driver.
3. Now, click on “Update Driver”.
   
4. From the pop-up box that opens, select Search automatically for updated driver software.
5. Windows will now automatically install the latest available version of the driver.

How to Re-install Drivers

1. Open Device Manager and find the driver causing the issue.
2. Now, expand the Driver menu and right-click the driver.
3. Now, click on “Uninstall Device”.
4. Find the correct driver from your manufacturer’s website, install and run it.
5. Now, restart your PC.

4. Rename the Faulty Driver or File

After retrieving the driver’s file name, causing the system thread exception not to handle the error, you should also change the driver’s name. This will cause Windows to create a new copy and reinstall it. Follow the steps given below to rename the file:

1. Open File Explorer and navigate to C:\Windows\System32\drivers.
2. Find the faulty driver.
3. Right-Click it and select Rename.
4. Replace the file extension with .old.
5. Press Enter and restart your computer.

5. Repair System Files using SFC or DISM

System File Checker (SFC) and Deployment Image Servicing and Management (DISM) are tools available to every Windows user and can be used to fix almost any system-related error. Here is how to repair system files using SFC and DISM:

Using SFC

1. In the Start-Menu, search for Command Prompt and run it as administrator.
2. Type sfc /scannow and press enter.
   
3. Windows will now scan for corrupt system files

Using DISM

1. In the Start-Menu, search for Command Prompt and run it as administrator.
2. Type DISM /Online /Cleanup-Image /ScanHealth and press Enter.
   
3. After Windows is done scanning, type DISM /Online /Cleanup-image /RestoreHealth and press Enter.
4. Windows will automatically repair all problems found during the scan.

6. Restore your PC using System Restore

How to restore PC using System Restore

1. In the Start-Menu, type Control Panel and open it.
2. In the search bar, type “Recovery” and click open it.
3. Now, click on “Open System Restore”.
4. Click on Next and select a Restore Point.
   
5. Now, click on Finish.

System Thread Exception Handled Successfully

Those were the various methods to fix the System Thread Exception Not Handled BSOD. It may be a little tricky to boot into safe mode, which may take some tries to get right. After you get through that, the rest of the process is a breeze, and you should have your PC up and running in no time. It can also be a little tricky if two of your drivers are causing the error; if so, you will need to follow the steps above to fix both drivers. The tips given above are also useful to fix other issues like the System Service Exception Error.

If you have other fixes for the System Service Exception error, you can write about them in the comments below.

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