Fix: SYSTEM THREAD EXCEPTION NOT HANDLED

The “SYSTEM THREAD EXCEPTION NOT HANDLED” is an error that appears on the blue screen error or blue screen of death. This error mainly occurs due to an incompatible, corrupted, or outdated Device driver.

Your computer will restart over and over again and eventually get stuck on the Blue screen. You may be stuck in a loop until you completely shut down your computer.

This problem mainly occurs due to the Display driver, but multiples drivers can also cause this error. That’s why the first step is user should find exactly the driver which is causing this error.

In this guide, we will show you how you can fix a SYSTEM THREAD EXCEPTION NOT HANDLED error on Windows 10/11.

1. Boot Windows into Safe Mode

The first step is users should boot the Windows into safe mode before attempting any troubleshooting step. Depending on your situation, you can choose the right way to get into safe mode. However, there are several ways to boot Windows into safe mode.

Boot into Safe Mode via settings

If you’re able to sign in on your computer, you can boot Windows into safe mode via settings.

On Windows 10, follow these instructions.

  1. Open Windows settings using Windows+I shortcut key.
  2. Navigate to Update & Security then select the Recovery.
  3. Under the Advanced startup, clcik the Restart now button.
  4. When the PC restrats, you should see the choose and option screen.
  5. Select the Troubleshoot > Advanced options > Startup settings, then click the Reboot button.
  6. When PC reboots, use the Number key to choose and option (Safe Mode with Networking) to boot into Safe Mode with Networking.

On Windows 11, follow these instructions.

  1. Open Windows settings using Windows+I shortcut key.
  2. Navigate to System > Recovery.
  3. Under the Recovery options, click the Restart now button.
  4. Follow the step 4,5 and 6 from the above section.

Boot into Safe Mode from Sign-in screen

If you’re able to reach the Sign-in screen, follow the steps to boot Windows into safe mode.

  1. Click the Power icon button.
  2. Hold down the Shift key on the keyboard.
  3. Click the Restart Button.
  4. Follow the step 4,5 and 6 from the above section.

From a Blue Screen

If you’re unable to reach the Sign-in screen, follow the below steps to start the Windows into safe mode.

  1. Hold down the power button until the computer gets shut down.
  2. Press the Power Button to boot the computer again.
  3. As soon as your computer starts, again hold down the power to shut down.
  4. Repeating this 4-5 times will start the Windows in reocvery mode.
  5. Follow the step 4,5 and 6 from the above section.

2. Find Which driver is causing the issue

Once you’re in safe mode, you can easily find the faulty driver by looking at the Windows Log file. Follow the below steps to check the Windows Log file to find the faulty driver.

  1. Press Windows + R key to open the Run Box, then type eventvwr.
  2. Hit the Enter button to open the Event viewer.
  3. Navigate to Windows Logs > System.
  4. Find the Log system_thread_exception_not_handled, and then click on it to find which driver is causing this error.
SYSTEM THREAD EXCEPTION NOT HANDLED
Event Viewer

3. Roll Back or Update the Driver

Once you find the faulty driver causing the “system thread exception not handled” error, you may either need to update or roll back the driver.

If you have not updated the driver for a long time; then updating a driver to a new version most likely will fix this error. If you have recently updated the Driver, then it would be best to roll back the driver.

How to Update Driver

  1. Click the Start Menu.
  2. Search Device Manager in the search box.
  3. Open the Device Manager.
  4. Navigate to the associated device and expand its drivers’ list. For example, if the error was happend due to the Display driver, then find the Dispaly adapter and expand it.
  5. Right-click the Driver and select the Update driver option.
SYSTEM THREAD EXCEPTION NOT HANDLED
  1. Next, click the Search automatically for updated driver software.
  2. Windows will automaticlly seach the web for the latest driver update and install them.

How to Roll back Driver

  1. Open Device Manager.
  2. Find the Device driver you want to roll back.
  3. Right-click the Driver, then open its properties.
  4. Under the Driver tab, click on Roll Back Driver.
system_thread_exception_not_handled
  1. Windows will roll back the driver to the last previous version.

4. Rename the Faulty Driver

Renaming the Driver file will cause the Windows to create a new copy of the driver and reinstall it. After retrieving the associated driver name, you can find the driver at location C:\ Windows\ System32\ drivers.

Follow the steps to rename the driver file.

  1. Open File Explorer.
  2. Navigate to C:/Windows/System32/drivers.
  3. Find the faulty driver.
  4. Click the driver, then press F2.
  5. Rename the filename extension with .old.
  6. Hit the Enter button to change the file.
  7. Restart the computer.

5. Run SFC (System File Checker) Tool

System File Checker is a command-line utility that scans all the system files and fixes if any file is corrupted. To run it, follow the below steps.

  1. Click the Start Menu button, search cmd in the start menu search box.
  2. RIght-click the Command Prompt in the search result and select Run as administrator.
  3. In the command prompt, run the command sfc /scannow.
  4. Windows will run the system file checker tool to scan all the system files.

This process may take some time, so be patient. After this process, restart your computer.

6. Restore your PC using System Restore

If you have walked through all the above steps, but the problem remains. Now, you should use the System Restore tool to restore the Windows to the earlier state. Windows periodically create the Restore points when any major change happens.

To use the System Restore, follow these steps.

  1. Click the Start Menu, and search control panel.
  2. Open the Control Panel from the search result.
  3. In the control panel search bar, type recovery.
  4. Then open the Recovery.
  5. Under the Advanced recovery tools, click the Open system restore.
  6. Click on the Next and then select the Restore point from the list.
  7. Click on the Finish button.

Conclusion

I hope the above methods help you to solve the system_thread_exception_not_handled error. These methods can also be used to troubleshoot various blue screen errors. If you have any problems regarding this error, feel free to comment below.

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