How To Fix ‘System Thread Exception Not Handled’ Error

Repeatedly encountered by users is the System Thread Exception Not Handled error. There can be numerous reasons for the System Thread Exception Not Handled error to appear, but the most common one is due to incompatible drivers.

It is most likely to occur during the booting of your PC. If received, system_thread_exception_not_handled error keeps you from logging into Windows, hence preventing you from performing all subsequent tasks and activities.

Windows, a popular operating system, is known for its versatility and robust features, but users may encounter occasional errors that disrupt their experience. “System Thread Exception Not Handled” is one such error.

In this article, we will explore the meaning of “System Thread Exception Not Handled,” examine common causes, and provide step-by-step solutions to help you address the issue. Additionally, we will discuss how to boot Windows in Safe Mode and reset your PC for a smoother experience.

What is System Thread Exception Not Handled?

“System Thread Exception Not Handled” is a Blue Screen of Death (BSOD) error in Windows that signifies a critical system error. This error occurs when a system thread, or a small unit of a computer’s CPU, generates an exception that it cannot handle.

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Causes of System Thread Exception Not Handled

Incompatible or Outdated Drivers: One of the most common causes of this error is incompatible or outdated drivers, including graphics, network, or peripheral device drivers.

Malware or System File Corruption: Malware infections or corrupted system files can also trigger the “System Thread Exception Not Handled” error.

Overclocking or Hardware Issues: Overclocking your computer’s components, such as CPU or RAM, can lead to instability and result in this error. Hardware problems or faulty components may also be responsible.

How To Fix System Thread Exception Not Handled Error in Windows 10, 8 and 7

Solution 1 — Rename The Dilemmatic Driver

1. To start with, insert the ‘Windows Recovery Drive or System Repair Disk‘ and select your desired language. Once done, click on ‘Next‘.

2. Go to the ‘Repair‘ option at the left bottom of your screen.

3. Select ‘Troubleshoot‘ followed by ‘Advanced Options‘.

4. Once redirected, navigate to ‘Command Prompt‘ to open it.

5. Feed the following command onto the prompt, exactly as mentioned below:


6. Type the word ‘Exit‘ and then restart your PC.

Solution 2 — Immobilize Hardware Acceleration

1. First up, run Google Chrome search engine and proceed to ‘Settings‘.

2. Navigate to the option titled ‘Advanced Settings‘ and click on it.

3. Under the heading ‘System‘, you will find an option that reads ‘Use Hardware Acceleration When Required‘. Unmark it.

4. Save your changes and subsequently exit your browser. Proceed towards Restarting your PC.

Solution 3 — Uninstall The Malfunctioning Driver

1. To start with, press the Windows key and ‘X‘ at the same time. From the menu that opens, select ‘Command Prompt‘.

 2. Enter the following command as is onto the prompt and press Enter:

bcdedit /set {default} bootmenupolicy legacy

3. This will enable the advanced legacy boot on your computer. Once done, exit the command prompt and restart your PC.

4. Next up, constantly press the F8 key to have the ‘Advanced Boot Option‘ appear on your screen.

5. When it does, select ‘Safe Mode‘ and then proceed.

6. Feed “devmgmt.msc” into the Run box and you will be taken to the Device Managers.

7. From the list, uninstall the drivers that are causing trouble. To confirm each Uninstallation, click on ‘OK‘.

8. Once completed, install the latest version of each driver from the manufacturer’s website.

9. Finally, proceed towards restarting your PC when all tasks have been completed.

Solution 4 — Restore Your PC To A Former Moment

1. To start with, connect the Windows Installation Media or Recovery Drive and proceed by selecting your preferred language.

2. You will be presented with an option ‘Repair your Computer’ at the bottom of your screen. Click on it.

3. Select ‘Troubleshoot’ followed by ‘Advanced Options‘.

4. Once redirected, click on ‘System Restore‘. On the next screen, you will be given certain instructions to restore your PC. Follow them properly.

5. Once done, end by Restarting your PC. This will implement the actions you have just done.

Solutions for System Thread Exception Not Handled

Update or Roll Back Drivers:

  • Access the Device Manager.
  • Right-click on the driver causing the issue and choose “Update driver” or “Roll back driver” if available.
  • Follow the on-screen instructions.

Scan for Malware:

  • Run a full system scan using your installed antivirus software to remove any potential malware.

Check for System File Corruption:

  • Open Command Prompt as an administrator.
  • Run the “sfc /scannow” command to scan and repair corrupted system files.

Booting Windows in Safe Mode

Why Boot in Safe Mode? Booting in Safe Mode allows you to start Windows with minimal drivers and services, which can help diagnose and fix problems like the “System Thread Exception Not Handled” error.

How to Boot in Safe Mode:

  • Restart your computer.
  • When the Windows logo appears, press the power button to force a shutdown.
  • Repeat this process a few times until Windows enters the Automatic Repair mode.
  • Select “Troubleshoot” > “Advanced options” > “Startup Settings.”
  • Click “Restart” and choose “Enable Safe Mode” or “Safe Mode with Networking.”

Resetting Your PC

Why Reset Your PC? Resetting your PC is a last-resort solution when all else fails. It restores your system to its factory settings, removing installed software and files. Backup important data before performing a reset.

How to Reset Your PC:

  • Open “Settings.”
  • Go to “Update & Security” > “Recovery.”
  • Under “Reset this PC,” click “Get started.”
  • Choose “Keep my files” or “Remove everything.”
  • Follow the on-screen instructions.

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The End

These are all the solutions we have to offer for you to try and eliminate the system_thread_exception_not_handled error. These methods may not be the most suitable ones for your computer, but one or the other from the above list is likely to solve your problem.

They are even suggestible for combating other errors such as the ‘Windows 10 Random Restart’ or ‘Windows 10 Slow Shutdown Error’. If they do not solve your problem, however, then you might consider approaching a formal operator for the same.

The “System Thread Exception Not Handled” error can be a frustrating experience, but with a clear understanding of its causes and the solutions provided in this article, you can often resolve the issue and restore the stability of your Windows system.

Addressing driver issues, malware infections, system file corruption, and hardware problems can help overcome this error. Additionally, booting in Safe Mode and performing a PC reset can be valuable troubleshooting steps for severe cases. Remember to backup essential data before proceeding with a reset to avoid data loss.