System Thread Exception Not Handled – How to Fix?

Are you experiencing a system thread exception not handled Windows 10 error?

If you answered yes, you’re in the right place.



The system thread exception not handled error occurs as a Blue Screen of Death (BSOD) problem in your computer system. It occurs when the process threads responsible for running important Windows services fail.

The system thread exception not handled error is common in Windows 8, 8.1 and 10 computers. Whereas the error occurs immediately when some systems are booted, other computers take 10 to 15 seconds before the error comes up.

The computer systems then reboot automatically, creating a loop that makes it difficult to continue accessing system files and using your PC. Driver malfunction is the main cause of the system thread exception not handled error.

The blue screen can appear on your computer due to a corrupted, outdated, or even an incompatible driver installed on your computer. Other causes include the recent installation of overclocking CPU software or an outdated driver and a recently overclocked change.

How Do I Fix Windows 10 “Stop System Thread Exception Not Handled”?

The first solution to BSOD is uninstalling recently installed drivers or programs if they’re responsible for the blue screen error. It’s important to track your computer updates and do a reinstallation whenever driver updates or patches are released.

Whichever is the cause of system thread exception not handled error in your system, consider the following solutions to rectify the problem:

3 Ways to Fix the “System Thread Exception Not Handled Windows Error

Here’s how:

1) Evaluate the Minidump System Files

The Blue Screen of Death (BSOD) error varies. System crashes are logged in the minidump file, explaining why it’s necessary to analyze it. The file gives access to detailed information on the exact cause of system thread exception not handled error in your computer.

Follow the procedure below to run the analysis:

  1. Find the PC icon on your desktop, right-click on it and select “Properties” at the bottom of the pop-up menu list.
  2. Click on the open window’s “Advanced” tab.
  3. Under the part “Startup & Recovery”, click on “Settings”.

Select the checkboxes under the “System Failure” section to activate the actions you want Windows to carry out whenever a system error occurs:

  • The “Send an administrative alert” option notifies system administrators of system errors if it’s set to push alerts. Type the command “wmic recoveros set SendAdminAlert = False” at the command prompt to change the registry and hit the Enter key.
  • Turned on by default, the part “Write an event to the System” log confirms that information on an error even has been logged and recorded in the system. It’s turned on by default. Type the command “wmic recoveros set WriteToSystemLog = False” at the command prompt and hit the Enter key to change the registry and turn off this option.
  • The option for “Automatically restart” activates Windows to restart automatically. It’s enabled by default. Type the command “wmic recoveros set Autoreboot = False” to turn off this option and press Enter.
  • Choose the information type to be recorded in the memory dump file in your Windows if the computer system crashes suddenly.
  • The smallest amount of information is recorded in the option “Small Memory Dump (256KB) to determine the problem. Type the command “wmic recoveros set DebugInfoType = 3” to modify the registry.
  • Set the “MinidumpDir Expandable String Value” to specify that you want to change the = registry and utilize the D:/Minidump folder as your Small Dump Directory. For instance, type the command “wmic recoveros set MiniDumpDirectory = D: \minidump” at the command prompt and press Enter.
  • The option “Kernel Memory Dump” records kernel memory only. Unlike the small memory dump file, it records more information but takes less time to finish.

Windows Driver Kit (WDK)

The Windows Driver Kit (WDK) helps create, test, and apply Windows drivers. Download the installer and follow the procedure below to ensure that the installation is done correctly.

  • Click on the “Start” button and select Run.
  • Type cmd in the command prompt and click on “OK”.
  • Type “cd c:\program files\Windows debugging tools” on the prompt to change folders to the “Debugging Tools for Windows.
  • Type “windbg –y SymbolPath –i ImagePath –z DumpFilePatch kd – y SymbolPath –i IMagePath i–z DumpFilePath” at the command prompt to load the debugger with the dump file and hit the Enter key.
  • Use the following command “windbg –y srv*c:\symbols* -i c:\Windows\i386 –z C:\Windows\minidump\minidump.dmp” to save the file into the windows 9 folder C: back folder C:\Windows\minidump\minidump\minidump.dmp.
  • Check for bugs and errors in the system file and determine if it’s a third-party app or a driver. Successful analysis of dump system files may lead to the successful resolution of the problem.

2) How Do I Fix Bad Config? Check Installed Display Drivers

The system thread exception not handled error message is also due to display drivers. Uninstall and re-install the latest versions of display drivers. Skip step two if you aren’t able to log onto Windows even within a few minutes.

If you can’t access Windows 10 or log onto your Windows PC, follow the two steps below:

1st Step – Boot into Your Computer’s Safe Mode

Services and drivers not needed to run Windows are disabled in the safe mode. Turn your computer on and press down the power button to force shut it down. Press the power button to do so in Windows 10, 8.0, 8.1.

  1. Turn the laptop back on and repeat the steps until your computer system goes into repair mode. Repeat 4 to 5 times. The aim of the steps is to push your system into the repair / advanced mode.
  2. Click on the “Troubleshoot” button and click on “Advanced Options”.
  3. Select “Command Prompt” and type the command “BCEDIT /SET (DEFAULT) BOOTMENUPOLICY LEGACY”.
  4. Type “Exit” on the prompt and press Enter.
  5. Click on the “Continue” button.
  6. Restart the PC and tap F8 or (Shift + F8) prior to the appearance of the Windows logo. The menu “Advanced Boot Options” appears.
  7. Select “Safe Mode with Networking” capability and hit the Enter button.
  8. Log into your computer and run your Windows computer in Safe Mode.

If the recovery options aren’t available in the safe mode, use an installation media of Windows operating system. Choose from a bootable USB to Media Creation tools.

  • You require 8GB USB data and a Windows computer with access to the internet. Create a Windows 10 or 8 bootable USB installation media.
  • Click on “Download Tool Now” at the bottom of the window and follow the instruction or prompt on the screen.
  • Power on and enter the bootable USB or DVD into your computer. Tap F2 to open the boot menu button which differs from one system model to another. It’s F9 for HP and F12 for DELL. Visit your manufacturer’s website for more information.

Use a repository scanner such as the Reimage Plus program to replace missing or corrupt system files if you’re working on a laptop, notebook or computer. If the system thread exception not handled issue was caused by a corruption in the system, do the following:

  • Highlight and select USB or CD/DVD drive post opening the boot menu depending on what you inserted into your computer.
  • Click any key to boot from the USB or CD/DVD media.
  • Change your preferred keyboard layout, time zone, and language if necessary. Otherwise, click “Next”.
  • Click on “Repair your computer” on the left, lower corner of the open window.
  • The procedure above is key to opening the command prompt to enter the safe mode.

2nd Step – Remove Display Drivers

  1. Hit the Windows + R keys to start the Run dialog box.
  2. Next, type “devmgmt.msc” and press Enter.
  3. Double click “Display adapters” on the new window that pops up to expand it. You’ll see the graphics card installed on your computer. Before removing or uninstalling the display driver, write down its full name.
  4. Then right-click on the display driver and select “Uninstall”.
  5. Click on “Delete the driver software of this device” and click on the “OK” button.   
  6. Restart your computer to automatically install a video driver. If the error persists, download the latest version of a compatible driver to install manually.

Follow the third step procedure below:

3rd Step – Update or Install Display Drivers

  1. Visit the website of your graphics card manufacturer to get the latest version of your graphics card drivers.
  2. Search for the drivers based on the model of your graphics card and download compatible drivers with your system x64 or x 86 type and Windows operating system.
  3. Press on the Windows + R keys to open the Run window and type msinfo32 at the command prompt and hit the Enter key.
  4. Note your system type and OS type on the right pane of the system information window. Run the downloaded executable file and follow the prompts on the screen.
  5. An integrated display adapter on your motherboard is handy when using an external graphic card. Visit the website of your manufacturer to get up-to-date drivers for your onboard graphics adapter.
  6. Moreover, you also need your system model as mentioned in the window of system information. The downloaded file will be executable. Run it and follow onscreen prompts or instructions.

3) Remove Your Sound Card Drivers

A faulty driver, known as C-Media USB Audio Class 1.0 and 2.0 DAC Device Driver, also causes the system thread exception not handled error.

  1. Type “devmgmt.msc in the Run dialogue.
  2. Click on “OK” to open the “Device Manager” window for assessment.
  3. Expand the “Sound, video and game controllers” device manager category. Right-click on the C-Media USB Audio Class 1.0 and 2.0 DAC Device Driver. A menu pops up for the device uninstallation. Click on “Uninstall devices.”
  4. Confirm the driver uninstallation.
  5. Check the “Delete the driver software for your computer” and click the “OK” button.
  6. Restart your computer to save the changes. Windows will reinstall drivers for replacement without the right sound card driver and replace it in the open Device manager.
  7. Alternatively, if the driver isn’t replaced, select an action under the “Device Manager” window to scan hardware changes. Click on the option for “Scan for hardware changes.”

You can also do the following to fix the system thread exception not handled error:

  • Renaming faulty drivers
  •  Resetting your computer
  • Ascertain that every hardware component on your computer and
  • Checking for BIOS update
  • Updating problematic drivers

Any of the solutions to system thread exception not handled error discussed here will help address the issue in a timely manner. You can also use overclocking software to boost performance and optimize your computer system.

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