The “Windows 10 SYSTEM THREAD EXCEPTION NOT HANDLED” error is a common BSOD (Blue Screen of Death) error that has a value of 0x0000007E. It indicates that a system thread generated an exception that the error handler did not catch.

The “SYSTEM THREAD EXCEPTION NOT HANDLED Windows 10” error mainly occurs due to incompatible, corrupted, or outdated drivers. Besides, it may also be caused by system incompatibility, IRQ conflicts, memory conflicts, etc.


After knowing the causes, here’s how to fix the “SYSTEM THREAD EXCEPTION NOT HANDLED” error in Windows 10. Follow the step-by-step guide below.

Method 1. Boot Your PC into Safe Mode

First, you need to boot your computer into Safe Mode. Follow the detailed steps below.

Step 1. First, enter into the Windows Recovery Environment (WinRE). By doing so, turn off and on the PC 3 times.

Tip: As soon as your device starts (e.g., the computer manufacturer’s logo appears when restarting), press the Power button for 10 seconds to turn off the PC. When the PC is turned on for the third time, you will enter WinRE.

Step 2. Once you are in WinRE, navigate to Troubleshoot > Advanced options > Startup Settings > Restart.

Step 3. After your PC reboots, press F5 to select Enable Safe Mode with Networking.

Method 2. Check the Error Log File

After booting your computer into Safe Mode, you can try using the Windows Log to check if the stop code SYSTEM THREAD EXCEPTION NOT HANDLED is caused by a malfunctioning driver.

Step 1. Press Win + R to open the Run dialog box. Type eventvwr in the box and press Enter to open Event Viewer.

Step 2. Go to Windows Logs > System. Then look for the error to see information about it.

Method 3. Rollback or Update Drivers

If the stop code SYSTEM THREAD EXCEPTION NOT HANDLED Windows 10 is caused by the issues with drivers, you can try updating, rolling back, or reinstalling drivers with these steps.

Step 1. Right-click the Windows icon and select Device Manager.

Step 2. In the pop-up window, expand the associated device.

To update drivers:

Right-click a driver and select Update driver. Then in the prompted window, choose Search automatically for updated driver software and follow the on-screen wizard to complete the process.

To roll back drivers:

Right-click the driver and select Properties. Then click the Driver tab and select Roll Back Driver.

Method 4. Run SFC and DISM

Besides, you can run the System File Checker (SFC) and DISM to detect and fix corrupted system files.

Step 1. In the Run box, type cmd and press Ctrl + Shift + Enter to run Command Prompt as administrator.

Step 2. In the pop-up window, type sfc /scannow and press Enter to execute the command.

Step 3. Wait for the process to complete, type the following commands and press Enter after each.

DISM.exe /Online /Cleanup-image /Scanhealth

DISM.exe /Online /Cleanup-image /Restorehealth

Once done, reboot your computer and check if the Windows 10 SYSTEM THREAD EXCEPTION NOT HANDLED issue is fixed.

Method 5. Run Memory Diagnosis

You can refer to the following steps to run Memory diagnosis that can check and fix any detected logical memory problem.

Step 1. Enter your Windows into Safe Mode. Then in the Run box, type mdsched.exe and press Enter to open Windows Memory Diagnostic.

Step 2. In the prompted window, select Restart now and check for problems. Then wait until the process completes.

Step 3. Check the result in Event Viewer.

Method 6. Perform System Restore

In addition to the above methods, you can try performing a system restore to revert your PC to the latest correct version. For the specific operation, you can follow this guide: How to Restore Computer to Earlier Date in Win10/8/7 (2 Ways). Besides, you can try resetting your computer to recover your PC.

Method 7. Reinstall Windows

If the Windows 10 SYSTEM THREAD EXCEPTION NOT HANDLED error still exists, you can try reinstalling Windows to fix this issue. If you want to perform a clean install of the OS, you need to back up or recover data in advance to avoid data loss. Here, I highly recommend using MiniTool partition software to help you back up data and recover data, although the system cannot boot.

Let’s see how to use MiniTool Partition Wizard to deal with Windows 10 SYSTEM THREAD EXCEPTION NOT HANDLED.

Tip: For Windows backup, you can use MiniTool ShadowMaker or MiniTool Partition Wizard. Just follow this post to back up your data.

Build a Bootable Data Recovery Tool

First, you need a working computer to create a bootable USB drive by using MiniTool Partition Wizard.

Step 1. Download MiniTool Partition Wizard, install and launch it to get its main interface.

Step 2. Then click Bootable Media on the toolbar. Click WinPE to continue.

Step 3. In the next window, select USB as the media destination. Then wait for MiniTool Media Builder to finish the building process.

Step 4. Once done, plug your USB into the problematic PC, reboot the computer, go to BIOS, and set the USB drive as the first boot option. Follow the on-screen instructions to continue.

Recover Lost Data When the Computer Cannot Boot

After you enter the main interface of MiniTool Partition Wizard, you can follow the detailed steps to recover the lost data.

Step 1. Click Data Recovery on the main interface of MiniTool Partition Wizard.

Step 2. In the Data Recovery interface, choose a partition (e.g., C drive) to scan.

Step 3. Wait patiently for the scanning process to complete. Once done, the scanning result is shown as follows.

Step 4. Then select the needed files and click the Save button to save the recovered data to another partition or another hard drive. Click OK.

Step 5. Once done, exit the software, shut down the computer and remove the USB drive.

Reinstall OS

After recovering the lost data and backing up Windows, it is time to reinstall Windows. First, you need to make a Windows installation DVD or USB.

Step 1. Connect your Windows installation DVD or USB to the computer. Restart your PC into the boot menu interface.

Step 2. Then set your Windows installation DVD or USB as the first boot choice and save the change.

Step 3. Once your PC boots from your USB flash drive successfully, you will see a Windows logo and a screen below. Specify your language and other preferences. Click Next to continue.

Step 4. Then click Install now and follow the on-screen wizard to complete reinstalling Windows.

Step 5. Once done, the fresh operating system can lead you to the desktop successfully.

In this post, we have learned how to fix the “SYSTEM THREAD EXCEPTION NOT HANDLED” error in Windows 10. You can try these methods to deal with this error. Hope your issue can be solved successfully. Besides, this free partition manager can help you solve disk issues and recover lost data.

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