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How to Fix System Thread Exception Not Handled

Running the Windows memory diagnostic tool can help to easily fix this error

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You might have come across various BSOD errors like the luafv.sys BSOD or the 0xc00002e3 BSOD. However, there is another blue screen of death error that has been affecting many Windows users worldwide, it is known as the system thread exception not handled BSOD.

This error often occurs when there is an outdated or incompatible driver, and it becomes quite tricky to solve because multiple drivers could be causing this problem, and your PC might not be able to detect them all. If you are having this problem, this guide will provide you with some effective solutions to combat this error, so ensure to read to the very end.

1. Boot your PC in safe mode

The first step we recommend taking is to start your PC in safe mode. This process starts Windows with only the essential services and startup programs, which can help reduce or even eliminate potential software conflicts that might be causing the error. Follow the steps below to perform a clean boot.

  1. Restart your PC, and press F8 once it starts booting. This will take you to the Windows Recovery Environment (WinRE).
  2. Next, navigate to See advanced repair options > Troubleshoot > Advanced options > Startup Settings > Restart.
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  3. Now press F5 on your keyboard to enable the  Safe Mode with Networking option.
  4. Allow your device to reboot and see if the system thread exception not handled error has been fixed.

2. Perform a DISM and SFC scan

Because the main culprit of this error is corrupt system files, using the built-in DISM and SFC utilities is one effective way to fix this error. These tools can help scan and detect system file errors, and replace them with fresh ones. Follow the steps below to use these tools.

  1. Hold Windows + R to open the Run dialogue, type cmd in the text field, then press Ctrl + Shift + Enter to open the command prompt as an administrator.
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  2. Once the command prompt is opened, enter the command below, and hit Enter.
    DISM /Online /Cleanup-Image /RestoreHealth
  3. After running this command, enter the next command below, and hit Enter.
    sfc /scannow
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  4. After running the second command, exit the command prompt, and check to see if the BSOD error has been fixed.

3. Look for the problematic driver using the Event Viewer tool

An integrated Windows program called Event Viewer records messages and events associated with running programs, hardware, and services. When addressing different system problems, such as the system thread exception not handled error, this tool can be quite useful. The steps below will help you utilize this tool.

  1. Press Windows + X simultaneously, then select Event Viewer.
  2. Look for the Windows Logs menu, expand it, then select System.
  3. Look for the system_thread_exception_not_handled log, then click on it to find out which driver is responsible for this error.

4. Update your drivers

Once you discover the driver causing the error, you should immediately update that driver. An outdated driver usually lacks the latest patches and bug fixes, and can often cause numerous problems including the system thread exception not handled error. Follow the steps below to update your drivers.

  1. Right-click on the Start menu, and choose Device Manager.
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  2. Locate the problematic driver, right-click on it, and choose Update driver.
  3. Next, choose Search automatically for drivers.
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  4. Allow Windows to automatically update your drivers. When the process is complete, reboot your PC and see if the error has been resolved.

5. Rollback your drivers

Reverting to an earlier known stable version of the driver can assist in fixing the system thread exception not handled error. If a recent driver update introduces a flaw or compatibility issue that is the cause of the error, this step can be useful.

  1. Right-click on the Start menu, and choose Device Manager.
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  2. Select the faulty driver, right-click on it, then choose Properties.
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  3. Navigate to the  Driver tab, then choose Roll Back Driver.
  4. After doing this, Windows will revert your driver back to the previous stable state.

6. Give the faulty file a new name

Renaming the problematic file linked to the system thread exception not handled error, can occasionally fix the problem by allowing Windows to make a fresh copy of the file. This can resolve any original file corruption or faults that might be the source of the blue screen error. Follow the steps below to make this change.

  1. Hold Windows + E to open File Explorer, then navigate to the path below.
    C:\Windows\System32\drivers
  2. Look for the problematic driver, right-click on it, then choose Rename.
  3. Replace the filename extension with .old, hit Enter, then restart your PC.

7. Run the Windows memory diagnostic tool

An integrated tool that might assist in locating and resolving memory issues that could lead to the system thread exception not handled error is the Windows memory diagnostic tool. This tool can assist in identifying and fixing any logical memory issues that might be the source of the error, and in addition, it can detect any physical memory problems that would call for hardware repair. Here is how to use the tool.

  1. Click on the magnifying glass icon, type Windows tools in the text field, then hit Enter.
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  2. Locate the Windows Memory Diagnostic option, and double-click on it.
  3. Choose Yes in the UAC prompt.
  4. Now, choose Restart now and check for problems.
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  5. When your PC comes up, the diagnostic tool will look for errors with the RAM.

8. Use system restore

If none of the steps above worked, you should try using a built-in Windows tool called system restore. This tool can fix this error by returning your computer to a prior state when the issue was not present. This can be especially helpful in cases where a recent modification, like installing a new driver or application, is the source of the error.

  1. Press the Windows button to open the Search bar, type control panel in the text field, and choose the relevant option.
  2. From the View by option, choose Large icons, then select Recovery.
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  3. Next, choose Open System Restore.
  4. Now click the radio button for the Choose a different restore point option, then click Next.
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  5. Choose a restore point that goes back way before encountering the error, then click Next.
  6. Select Finish to complete the process.
  7. After restoring your PC to an earlier state, check to see if the problem has been fixed.

Bottom line

We have successfully gone over various methods to easily resolve the system thread exception not handled BSOD error. Follow these steps carefully to get a positive result, and if you have further questions, reach out to us via the comment section below.

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David Ogbor
David is a tech guru with extensive knowledge in technical articles. He is passionate about writing and presents technical articles in an easy-to-understand format for easy comprehension. He aims to present easy solutions for day-to-day problems encountered while using PC. In his spare time, he likes traveling, playing sports, and singing.