About Simple Thread Error
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System Thread Exception Not Handled Error is quite a complex error. It holds traits that may cause the computer to perform at its minimum pace. Believe it or not, but once this error virtually accesses your system, it can be difficult to recuperate its first-hand capabilities.
By definition, a System thread is the brain of the computer. It keeps track of all the activities coming off on a computer. System threads are responsible for the execution of any program with the help of process code. Moreover, the system threads monitor the sequence of the instructions. It also checks whether the register holds the correct variable or not. Also, System threads contain lists of execution history or Stacks.
The Damage Caused By the Error
When the “System Thread Exception not handled” error appears consistently on your screen, it means that your PC can no longer locate the registered and assigned code segments for different tasks.
This article will get to know how to fix the “system thread exception not handled” error. Let us begin! However, before discussing the solution to the “system thread exception not handled” error, let’s take a glance at why this error appears in the first place:

Why do you see the “System Thread Exception Not Handled” Error?
To begin with, System Thread remains 90% responsible for performing tasks on the computer system by allocating a unique thread code to each task. Whenever a user conducts a task on a PC, the entire virtual system sends a task request to the System thread. As a consequence, the system thread delivers code segments to the PC, and it further performs tasks on the user’s behalf.
“Exception” stands for “a general rule not followed.” Thus, by definition, System Thread Exception Not Handled is a type of error under which a code segment remains unwilling to send commands to the computer. Here are the following reasons why it happens:
#1: Drivers Failure or Malfunctioning
Now, it is crucial to note that System Thread doesn’t crash due to a single driver’s malfunctioning. For example, if the audio driver malfunctions solely, you may see a “No Audio Output Device is Installed” Error. However, when multiple drivers crash or begin to malfunction, it becomes a distressing case of “System Thread Exception Not Handled.”

The reason being, if more than one driver on your PC doesn’t work, it wouldn’t be able to transfer data correctly. Furthermore, performing tasks such as downloading files, accessing browsers, or playing music will be impossible. As a consequence, the PC will go into “Blue Screen of Death.” It will request a RESTART.
#2: System Thread Exception Not Handled? Corrupted File System or Data
Presuming that you are using a PC for real-time entertainment purposes like downloading movies from proxy servers or playing high-range games can cause it to collect corrupted files off the internet. The scary part is that corrupted files multiply themselves easily. Before you know, a single corrupt file multiple into 100 new corrupted files. At last, the PC shuts down entirely or goes into the Blue Screen of Death more.

All you can see is the error “System Thread Exception Not Handled.” The reason being, when a computer is on the verge of an error which it cannot resolve without wiping out the entire data, it goes into BSOD mode.
#3: Malware manipulates Graphics Driver
You may wonder why you are dealing with Blue Screen of Death in the first place? Here’s a simple and logical answer: Graphics driver corrupted. When you download or perform any activities on a computer using an unknown source, malware enters the system. At first, it may not harm the computer in a way that you can observe. However, at one point, the malware starts manipulating the Graphics driver, due to which the entire screen goes off.
As a result, “System thread exception not handled” will appear on the screen.
#4: The system thread is unwilling to catch the error
System Thread Exception is a classification of error where your PC is dealing with an unknown error. When the system thread couldn’t catch this error, it directly goes to Blue Screen of Death in order to protect hardware and software from permanent damage.
In many cases, BSoD also comes with digital codes and unknown files’ names. They may be the corrupted files that caused the error in the first place.
How to (Fixed) System Thread Exception Not Handled Error?
For the most part, if your system goes into BSOD mode, it can be because of any of the above-mentioned errors. But of course, if you are facing a blue screen, you may not be able to shortlist the cause. Thus, we present the following list of methods that you can try to fix:
#Method 1: Boot/Reboot System in Safe Mode
What is safe mode? Users who are encountering unknown problems in computer systems can rely on safe mode to avoid any damage to the hardware and software. It is a startup mode that permits users to push a background check on a PC and view what’s wrong with it. Here’s a brief guide on how to reboot PC in safe mode:
Note: The following boot method is utilizable when your PC is not dealing with Blue Screen of Death.
- Access the Start Menu (or press the Windows key).
- Enter the “Update & Security” section.
- Now, click on the “Recovery” option.
- Tap on the “Advanced Startup” option.
- Then, select the “Restart Now” option.
As you do so, your PC will restart. However, it wouldn’t directly go to the desktop. Instead, you will see a “Choose an option” screen.
- Click on the “Troubleshoot” option.
- Next, select the “Advanced options.”
- After that, click on the “Startup Settings.”
Again, click on the “Restart Now” alternative.
As soon as the restart begins, press the F5 key, which will allow the PC to go into safe mode.
How to restart the PC in safe mode with Blue Screen of Death?
Deleting with BSoD due to System Thread Exception Not Handled? If yes, then it is impossible to access the start menu. As a result, you can no longer restart the system in safe mode. However, the following hack will help you:
- Press and detain the power button till the PC switches off.
- Again, press and hold the power button for a reboot.
- When your PC restarts, again, press and hold the power button for a minimum of 10 seconds.
- Remember, you have to be quick about it.
Now, again, restart the device using the power button.
- As you do so, Windows Recovery Mode will begin.

However, it wouldn’t directly go to the desktop. Instead, you will see a “Choose an option” screen.
- Click on the “Troubleshoot” option.
- Next, select the “Advanced options.”
- After that, click on the “Startup Settings.”
Again, click on the “Restart Now” alternative. As soon as the restart begins, press the F5 key, which will allow the PC to go into safe mode.
#Method 2: System Thread Exception Not Handled? To resolve reset your system from scratch
Before pursuing this method, it is recommendable to create a backup of data in iCloud or Google Drive (or any third-party backup software). Alongside, also note that it is only plausible if none of the solutions work out for you.
Here’s how to do it:
- Access the Start Menu (or press the Windows key).
- Now, click on the “Settings” option.
- Next, select the “Update & Security” option.
In this section, you will see three mainstream reset options.
Reset this PC: It will entirely reset your computer system with no data left.
Go back to the foregone version of Windows: If your hardware is not compatible with the latest OS, this option will revive your PC to the previous Windows version.
And, Download New Updates: If your existing OS version has rolled out, you can update it to the latest one from here.
- Choose the “Reset this PC” option by clicking on “Get Started.”
- Click on the “Remove Everything” option.
- Then, select the “Remove my files and clean the drive” option.
- Tap on the “NEXT” button.
- Again, click on the “Reset” button.
- Sit back. It may take a few minutes for PC to reset to default mode entirely.

Presuming that you are dealing with system thread exceptions, not handled the error, this method is quite reliable. However, only if there’s something wrong with drivers on your PC.
Please take the risk at your own call. When you reset the PC with the “Remove Everything” priority, all files, folders, applications, passwords, etc., will be deleted.
#Method 3: Locate faulty files or driver and rename it
When a System thread exception not handled error appears on your screen, it means that the system thread is unable to detect a faulty file or driver that may cause damage to the PC. In many cases, when the PC goes to Blue Screen of Death, it mentions files names and drivers which are causing the problem. The prominent way to deal with it is by renaming the faulty file or driver, which System Thread will no longer detect as faulty.
For example, a file with “.sys” in the end remains problematic. Yet again, it is only a temporary solution.
Here’s how to pursue this method:
- First of all, access the command prompt.
- Use Windows key plus X key shortcut.
- Now, type the command “C:”
- Press the enter button.
- Then type the command “dir” and enter.
This command will automatically detect the targeted folder.
- Type the command “cd windows\system32\drivers” (use D: in place of windows if windows are not the targeted driver).
- Press the enter button.
- Next, type the command “ren driver name. sys driver name.old.”
- Press the enter button.
Let’s suppose the faulty file name is wikjag.sys. Thus, in the place of the driver’s name, type “wikjag.sys” in the above-mentioned command.
Finally, restart the system.
#Method 4: Uninstall and Reinstall Display Driver
This is a rather tricky method. However, it is possibly helpful in case something is wrong with your display driver. If the display doesn’t work, it is logical for the PC to go into the BSOD mode. Here’s a brief guide for your reference:
To begin with this process, please refer to the “boot mode” restart guide given in method 1. After commencing in “safe mode,” follow the steps given below:

- Open run administration by pressing the Windows key and R key at the same time.
- In the run dialogue box, type the file name “devmgmt. MSC” and tap the enter button.
- Click on the “Device Manager” option.
- An entire list of all drivers installed on your PC will appear.
- Locate the display driver.
- Right-click on it.
- Uninstall the driver.
Note: You can also opt for “Update Driver” directly if you have updated your Windows version recently. It is possible that your existing driver is not compatible with the new OS.
Go to the Disk Manager again and reinstall the display driver.
#Method 5: Uninstall and Reinstall Sound Cards Driver
- Open run administration by pressing the Windows key and R key at the same time.
- In the run dialogue box, type the file name “devmgmt.MSC” and tap the enter button.
- Click on the “Device Manager” option.
- An entire list of all drivers installed on your PC will appear.
- Locate the sound card driver. (by the category, Sound Card, Video, and Controller).
- Right-click on it.
- Uninstall the driver.
Restart the PC for sound cards to reinstall automatically.
Epilogue
In this article, we discussed system threading and the errors related to the drivers. Also, we learned m0re about processes and threads, their definition, and their differences. By now, I hope we can troubleshoot the blue screen error. Then, we can take the help of the above-shared steps to resolve the error. You may try following the steps before calling the technician. Technicians also follow the same troubleshooting steps to analyze and fix any software error. In the end, we hope you like the article. Thank you for reading. Take care and be safe!
I’m a cheerful spirit who is in love with Food, at first sight, a wifey on 24*7 duty & an enthu-cutlet to explore untapped sources of knowledge. A writer by passion & profession, I’m still learning new things every day & don’t want to stop this process ever.