Fix The System_Thread_Exception_Not_Handled Error

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While using Windows, some of you might have come across a situation when your system’s screen went all blue and dysfunctional with a message saying that system_thread_exception_not_handled.

This kind of problem usually occurs randomly or when the system boots up during the upgrading or set up times. This stop error happens due to many reasons and can be solved easily too.


Generally, you have to wait until the system collects some information, and then the PC reboots itself to solve the problem.

However, if it doesn’t, this article will prove to be of great help where we will be telling you ways to resolve this System_Thread_Exception_Not_Handled issue if it happens on your Windows 10 computer. So let’s get started.

Why does the issue of system_thread_exception_not_handled happen?

One of the main common reasons is BIOS incompatibilities. The System_Thread_Exception_Not_Handled issue can also be caused by a driver like nvlddmkm.sys, Netwtw04.sys, and iaisp64 sys.

Sometimes when you boot the computer, the screen flickers and turns blue. The system then enters into a loop of reboots, where it keeps on rebooting repeatedly.

When the system_thread_exception_not_handled error happens in Windows 10, it is mostly the graphic drivers to be blamed. They are either the old ones, get corrupted or incompatible. Thus several parts of them become unrecognizable by Windows.

Due to this confusion where it recognizes some parts and not the others, the error is caused. However, if you think it’s a big problem, it’s not true as it can be resolved by the simple methods we will be telling you.

PS: click here to figure out how to fix the Whea Uncorrectable Error.

How can the issue of system_thread_exception_not_handled be solved?

Since the reason for the problem is many, we will be dealing with them one by one. As we all discussed, the major reason is the malfunctioning of the drivers.

Before starting the process, you need to check if there is enough disk space on your computer. If space is not enough, then use any tool to delete the junk files, which would clear up some space on the disk. The disk cleanup tool can be one such help that you can use.

Sometimes, the message that appears on the blue screen also contains the file’s name that caused the error. It can be something like system_thread_exception_not_handled (nvlddmkm.sys). The name written in the bracket is the name of that mischievous file, which means that it is the graphic driver called NVIDIA.

In this case, where the error displays the file’s name to you, you begin the troubleshooting right, targeting the particular file only.

The main idea is that once you see the file’s name in the bug check message, you start with finding out the nature of the file. You need to find out the location of the file on the computer. Then, check its properties or search about the file on the web if the system doesn’t revert any information about it.

As we know the reason now, it is obvious that you need to start treating the driver file. You may try disabling the driver or checking with the manufacturer for updates for the driver according to the situation.

You can search for yourself if there are any updates for the driver. If you find out that any new service was added in the form of the file, then you may try disabling it with the help of services.msc and see if that works out for you.

How to stop the reboot cycle?

One very effective way is by interrupting the reboot cycle and booting the system into Safe mode. You need to follow these steps to make this happen:

  • 1. Insert the installation media of your Windows 10 and use that to boot your PC.
  • 2. Once the media loading is finished, select the option for repairing the computer instead of installing it.
  • 3. Select the option of Troubleshoot in the advanced options and startup the settings once again.
  • 4. Press F5 for the safe mode in the Networking window; the computer will start rebooting after this.
How to stop the reboot cycle

You must always note these steps as they will always help you set up the Safe mode. This mode will be crucial for setting up as all the operations will be done within it. You can use this method always in the future if any such problem occurs again.

Besides, here are the top solutions for the issue IRQL_NOT_LESS_OR_EQUAL WINDOWS 10.

How to update the drivers to solve the issue of system_thread_exception_not_handled?

We know that when dealing with faulty drivers in the Windows desktop, we should update them to solve the major issue.

When the error message shows the driver’s name that caused the System_Thread_Exception_Not_Handled issue, you should start updating it first.

However, later you may find out that the entire matter wasn’t just about that one driver. And there was more wrong than just the graphics. The process we will tell you now aims to update all the existing drivers on the system you are operating.

Below are the steps to do so:

  • 1. Right-click on the Start button of the windows. Click on the tab Device Manager.
  • 2. Right-click on the graphics card and select the option Update Driver software.
Update Driver software
  • 3. Select the option Automatic. Now let Windows find the updated version of the driver, if there may be any. If Windows doesn’t revert any information, you may need to visit the website of the driver’s manufacturer. Download the updated version and install it manually on the system.
downloading drivers
  • 4. Once the driver prompts, do not reboot the computer immediately.
  • 5. Right-click on the audio card and the network card and select any of the peripherals you may have installed. Select the option Update Driver Software for all of them. Allow Windows to install an update with all of these wherever possible.
  • 6. Again, click open the Windows start panel. Click on the Settings tab and select the Update and Security option.
  • 7. Click on the option Windows update. Let the update process finish, then.
  • 8. Now, remove the installation media of your Windows. Now reboot your PC in just the normal way.
  • 9. Once booted into Windows 10, the system_thread_exception_not_handled error is gone.

When the blue screen appears at the start-up time, you should try rebooting the Windows in safe mode or remove the malfunctioning driver. If the driver is a part of the start-up, the setting of the system in safe mode, then use the Recovery console to restart the computer.

You may also try changing the video adapters or getting the latest updated version of Adobe Flash player. If the system has BIOS memory enabled, then disable it. You can also check for BIOS updates if there are any with the hardware vendor.

If you face the audio service is not running, click to fix it now.

Preventing Future Occurrences

To prevent the “System_Thread_Exception_Not_Handled” error from occurring in the future, consider the following preventive measures:

  • Keep your device drivers up to date.
  • Regularly scan your system for malware.
  • Avoid installing unreliable or incompatible software.
  • Create system restore points before making any major changes.
  • Maintain a backup of important files to safeguard against unexpected errors.

By following these precautions, you can minimize the chances of encountering this error and ensure a smooth computing experience.


Q1. Can I update my device drivers manually?

Yes, you can update device drivers manually by visiting the manufacturer’s website and downloading the latest drivers for your specific hardware. However, this method can be time-consuming and may require advanced technical knowledge. Using driver update software or relying on the automatic driver update feature in Windows is generally recommended for convenience and accuracy.

Q2. What should I do if the “System_Thread_Exception_Not_Handled” error persists after trying all the solutions?

If the error persists after attempting all the troubleshooting solutions, it is advisable to seek professional assistance. Contacting the customer support of your computer manufacturer or consulting a qualified technician can help diagnose and resolve complex system errors.

Q3. Is it necessary to perform a clean boot regularly?

Performing a clean boot is typically done as a troubleshooting step to identify software conflicts. It is not necessary to perform a clean boot regularly unless you encounter specific issues that require isolating third-party software.

Q4. Can the “System_Thread_Exception_Not_Handled” error cause data loss?

The “System_Thread_Exception_Not_Handled” error itself does not directly cause data loss. However, if your system crashes or becomes unresponsive due to this error, there is a risk of losing unsaved data. It is always recommended to save your work regularly to minimize the impact of unexpected errors.

Q5. Can I prevent malware infections by using an antivirus software alone?

While using a reliable antivirus software is crucial for protecting your system from malware, it is not a foolproof solution. Practicing safe browsing habits, avoiding suspicious websites and downloads, keeping your operating system and software up to date, and employing additional security measures such as a firewall can significantly enhance your system’s security and minimize the risk of malware infections.


This article dealt with all the possible reasons that caused the system_thread_exception_not_handled problem in your Windows system.

We told you the best fixes for it too. So if you’re facing such an issue, find out the reason and diagnose it with the method meant for it.


Ten years of experience in information and computer technology. Passionate about electronic devices, smartphones, computers, and modern technology.

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