How to Fix a System Thread Exception Not Handled BSOD

Help in identifying the problematic driver

Windows 10’s “System Thread Exception Not Handled”BSOD (blue screen of death) erroris associated with faulty, obsolete, or corrupt device drivers. In most cases, the stop code (usually0x0000007Eor0x1000007E) is fairly easy to troubleshoot. Updating or rolling back a specific driver is all it takes to stop the error from recurring.

But rarely, you may have to work your way through several advanced fixes to sort things out. Before you start, however, you must identify the problematic device driver behind the “System Thread Exception Not Handled” BSOD.

Identify Problematic Driver

Whenever you run into a “System Thread Exception Not Handled” BSOD error, you’ll see the failed system (.sys) driver file listed right next to it. Several drivers that trigger the error include:

Take a picture of the “System Thread Exception Not Handled” BSOD screen the next time it occurs. Then, perform an online search with the (somewhat cryptic) system driver file name to identify the associated device driver.

If you can’t wait around until Windows 10 runs into the “System Thread Exception Not Handled” error again, download and run the freeBlueScreenViewapplet from Nirsoft. It automatically analyzes BSOD dump files and relays the driver file causing the issue.

If the “System Thread Exception Not Handled” BSOD shows up without denoting a specific driver file, it’s still a good idea to use the troubleshooting tips that follow to update, rollback, or reinstall drivers related to components such as graphics and audio.

Update Device Driver

The “System Thread Exception Not Handled” BSOD error generally stems from outdated hardware drivers, such as those related to the video card.

Head over to the device manufacturer’s website and download the latest driver for the device in question. Then, run the executable to update the drivers.

In cases where you have trouble locating specific device drivers online, you can use a driver updater tool to automate the procedure.

Install Windows 10 Updates

The latest Windows 10 updates not only contain various fixes for bugs and issues that crop up while using your PC, but they also come with hardware driver updates. You must install them.

  1. Open theStartmenu and selectSettings.

  2. Pick theUpdate & Securityoption and chooseCheck for updatesto initiate a scan for new updates.

  3. SelectDownload and installto update Windows 10, andView all optional updatesto select and install hardware driver updates.

Roll Back Device Driver

New driver updates can also end up introducing issues. If the “System Thread Exception Not Handled” BSOD error showed immediately after updating a device, you must roll that back.

  1. PressWindows+Xand select the option labeledDevice Manager.

  2. Locate and right-click the device that you want to roll back. For example, if you see theigdkmd64.sysfile name alongside the “System Thread Exception Not Handled” error, you must select your Intel graphics card.

  3. SelectProperties.

  4. Switch to theDrivertab.

  5. SelectRoll Back Driver.

Delete and Reinstall Device Driver

If updating or rolling back a driver didn’t help, you must reinstall it instead. That should help rule out a “System Thread Exception Not Handled” BSOD caused by corrupt hardware drivers.

  1. PressWindows+Xand selectDevice Manager.

  2. Right-click the device driver that you want to delete.

  3. SelectUninstall device.

  4. Check the box next toDelete the driver software for this device(if you see such an option) and selectUninstall.

  5. Restart your computer.

The operating system should reinstall the device driver automatically. Update it by downloading and applying the latest driver from the manufacturer’s website.

Repair Corrupted Files and Drive Errors

If none of the fixes above worked, you could use the System File Checker, DISM (Deployment Image Servicing and Management) tool, and the Check Disk Utility to check and repair corrupted files and disk errors in Windows 10.

You can run all three tools via an elevated Windows PowerShell console. PressWindows+Xand selectWindows PowerShell (Admin)to open PowerShell with administrative privileges.

The System File Checker fixes corrupt system files in Windows 10. Execute it with the following command:

sfc /scannow

The DISM tool fixes stability issues in Windows 10. Run the three commands below one after the other:

DISM /Online /Cleanup-Image /CheckHealth

DISM /Online /Cleanup-Image /ScanHealth

DISM /Online /Cleanup-Image /RestoreHealth

The Check Disk Utility repairs drive errors. Run it with the following command:

chkdsk c: /r

Use System Restore

Another feasible way to fix the “System Thread Exception Not Handled” BSOD is to restore the operating system to an earlier state. To do that, however, you should’veset up System Restore in Windows 10previously.

  1. PressWindows+S, typesystem protection, and selectOpen.

  2. Switch to theSystem Protectiontab and selectSystem Restore.

  3. Follow the System Restore wizard’s instructions to revert Windows 10 to a specific restore point.

Reset Windows 10

Do you still keep running into the “System Thread Exception Not Handled” BSOD?

You can eliminate any underlying issues behind the error byresetting Windows 10 to factory defaults. It’s somewhat akin to reinstalling the operating system from scratch, but you can choose to keep personal files intact should you want.

  1. Open theSettingsapp in Windows 10.

  2. SelectUpdate & Security.

  3. Switch to theRecoveryside-tab.

4.SelectGet started.

  1. Follow the on-screen instructions to reset your PC.

System Thread Exception Handled

The fixes above most likely helped you fix the “System Thread Exception Not Handled” BSOD error on your computer. If not, here are several other things you can do:

If that still doesn’t help, you’re probably dealing with a defective hardware component. Contact your local PC repair service for assistance.

Dilum Senevirathne is a freelance tech writer and blogger with three years of experience writing for online technology publications. He specializes in topics related to iOS, iPadOS, macOS, and Google web apps. When he isn’t hammering away at his Magic Keyboard, you can catch him binge-watching productivity hacks on YouTube.Read Dilum’s Full Bio

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