Troubleshooting: SYSTEM THREAD EXCEPTION NOT HANDLED

Last Updated on July 22, 2021



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SYSTEM THREAD EXCEPTION NOT HANDLED is a common Windows 10 error that occurs mostly due to an outdated or incompatible driver.

It is more difficult to fix this problem than other BSODs, because several drivers can be the cause of the problem, and sometimes the computer does not recognize all of them. Therefore, the first step to fix this error should be to find the exact driver causing the problem.

In this article, we will look at what this code means, when it occurs, why it occurs, and present effective methods of solving the problem.

What causes the SYSTEM THREAD EXCEPTION NOT HANDLED error?

  • The “system_thread_exception_not_handled” error occurs mostly when you start your computer after shutting down or rebooting. However, it can occur sporadically and is known to occur when the user runs a program that requires certain graphics drivers.
  • This error occurs when the computer has incompatible drivers installed (most often graphics drivers) that are either outdated, damaged, or just plain bad. Graphics drivers can be corrupted by malware and can also be installed incorrectly, which is another reason why the “system_thread_exception_not_handled” message appears on Windows 10.

How to resolve the SYSTEM THREAD EXCEPTION NOT HANDLED problem?



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Update, reset or reinstall the driver

  1. Press the “Windows + X” keys.
  2. Select “Device Manager” from the pop-up menu.
  3. Update, reset or reinstall drivers (especially drivers for video cards, network cards, sound cards, etc.)

Updating the drivers :

  • Expand the directory and right-click on the driver to select Update Driver.
  • From the pop-up window, select Automatically check for driver software updates.

Resetting the driver :

  • Expand the directory and right-click on the driver to select Properties.
  • Go to the Driver tab and click Reset driver.
  • Select the reason and click Yes.

Reinstalling the driver:

  • First, uninstall the device.
  • Find the driver on the device manufacturer’s website and follow the instructions to install it.

Update the firmware

  1. Press the “Windows + R” keys.
  2. Type “msconfig” in the startup window and click “OK” to open the system configuration.
  3. Switch to Tools.
  4. Highlight “System Information” and press “Start.”
  5. Then remember the BIOS version/date.
  6. Download the correct new version of the BIOS from the manufacturer’s website.
  7. Insert a USB flash drive with the new BIOS version and open the BIOS to update the firmware.

Restoring system files

The “System stream exception not processed” error in Windows 10 can be caused by corrupted system files. You can recover them by running the SFC and DISM programs. This method applies whether your computer can boot into Safe Mode or not.

Instructions for SFC :

1.) Open a command prompt as an administrator.

In Safe Mode:

  • Type “Command Prompt” in the Windows search bar.
  • Right-click on the Command Prompt icon and select “Run as administrator”.

If your computer won’t start :

  • Go to Troubleshooting -> Advanced Options -> Command Prompt.

2.) Type “sfc /scannow” and press Enter.

3.) Then wait for the process to finish.

Instructions for DISM:

  1. Open a command prompt and run it as an administrator.
  2. Enter the following commands one by one.
  • exe /Online /Cleanup-image /Scanhealth
  • exe /Online /Cleanup-image /Restorehealth



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Frequently Asked Questions

SYSTEM THREAD EXCEPTION NOT HANDLED is an error that appears on the blue screen of death (BSOD) when threads of processes running critical Windows services malfunction. An outdated, corrupt, or incompatible driver can cause this blue screen.

Sometimes the System Thread Exception Not Handled error is caused by memory corruption. To solve this problem, you need to enter Windows or safe mode to check the RAM. If the result shows that it is correct, you should check if the memory bank is properly inserted.

  1. Boot into safe mode.
  2. Determine which driver is responsible.
  3. Cancel or update the driver.
  4. Rename the faulty file.
  5. Use SFC and DISM to restore system files.
  6. Use System Restore to restore your computer.

  1. In the search bar on the taskbar, type Device Manager, then select Device Manager.
  2. Select a category to see the device names, then right-click (or hold down) the device you want to update.
  3. Select Automatically check for driver software updates.
  4. Select Update Driver.