System Thread Exception not Handled ntfs.sys [Fixed]

by Ivan Jenic

Troubleshooting Expert

Last update:February 4, 2021

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Have you upgraded to or Windows 10? If you have, you might encounter the System thread exception not handled error message appearing on your display alongside the classic Blue Screen of Death.

The system thread exception not handled error appears when installing Windows 10. Read this guide to learn more about this issue and how to fix the System thread exception not handled error in Windows 10.

If the System thread exception not handled error message appeared on your screen, you will also notice that after approximately five or ten seconds your Windows 10 device will reboot.

This error message is caused by an outdated graphic driver. Don’t worry because you will find the system thread exception not handled in Windows 10 fix in our guide.

We need to mention that our solutions also cover the SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (netio.sys) error and the system_thread_exception_not_handled (lvrs64.sys).

How do I fix the System thread exception error?

1. Fix the error using third-party software
2. Install the latest graphics drivers
3. Reinstall your graphics drivers
4. Launch Startup Repair
5. Run the BSOD troubleshooter
6. Use a Restore Point

1. Fix the error using third-party software

If you’re not familiar with such errors, this blue screen might scare you a little bit. System thread exception not handled is not a very common one but it can be fixed.

But you can do this the hard way, by tweaking the system yourself or by using a clever solution that automatically clears this kind of errors in just a few seconds.

Blue Screen of Death, or BSOD (as it is commonly known), is a stop or exception screen error that appears whenever your Windows PC is affected by a fatal system error. The colored screen (blue, red, black, pink) that is associated with this problem has become a synonym for issues on Windows, and entails a system crash or a state in which your operating system can no longer run safely. BSoD errors can appear because of a variety of causes including malfunctioning hardware, corrupt drivers, problematic DLLs, power supply issues, or even overheating of specific components of your PC. Hardware issues that cause BSoD can be obviously resolved by replacing/repairing the damaged components, but resolving this issue when software is the fault can be very tricky and potentially dangerous for your system. To avoid any unwanted issues by attempting a fix on your own, we recommend that you use a specialized Windows repair software, and the best option for this task is by far Restoro.

This powerful and yet compact software enables you to resolve BSoD errors with just a few clicks of your mouse and without the need to worry about any other side effects. Next, we will present you with a step-by-step guide that will allow you to successfully set up Restoro, and start resolving a great variety of issues, including the dreaded BSoD:

1. Download and install Restoro.
2. Launch Restoro
   • Restoro will now compile data about your PC.

     

3. Wait for it to find any system stability issues and possible malware infections.
   • Once the scan is complete, Restoro will show you a summary of your PC’s current status.

     

4. Press Start Repair.
   • Restoro will now start downloading and replacing and faulty registries, DLLs, and any other damaged files it may have found during the scan.
   • This is possible thanks to the online libraries that is uses for comparison, replacing damaged data with its perfectly functional equivalent.
5. Restart your PC for all the changes to take effect.

Your PC should now work perfectly fine, and you will no longer have to worry about slow response times, BSoD errors, or anything of the sort. Disclaimer: This program needs to be upgraded from the free version in order to perform some specific actions.

2. Install the latest graphics drivers

As the System thread exception not handled error is most likely caused by a problematic graphics driver, the first obvious solution is to update it.

However, it’s not that simple to do it manually and if you get the wrong driver, the things could get even worse. That’s why it’s a lot safer and faster to use a third-party software that can update your drivers automatically.

If you are a gamer, photo/video producer, or you deal daily with any kind of intensive visual workflows then you already know the importance of your graphics card (GPU). An outdated GPU driver can lead to massive slowdowns, lag, and fatal errors. Your system won’t always choose the latest manufacturer driver for your graphics card. To make sure that everything goes smoothly and avoid any kind of GPU driver errors, be sure to use a complete driver update assistant that will solve your problems in just a couple of clicks. We strongly recommend DriverFix. This is a safe and resource-saving tool that will be your best advisor for this type of operations. Follow these easy steps to safely update your drivers:

1. Download and install DriverFix.
2. Launch DriverFix.
3. Wait for DriverFix to detect all your faulty drivers.

4. DriverFix will now show you all the drivers that have issues, and you just need to select the ones you’d liked fixed.

5. Wait for DriverFix to download and install the newest drivers.

6. Restart your PC for the changes to take effect.

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Disclaimer: this program needs to be upgraded from the free version in order to perform some specific actions.

3. Reinstall your graphics drivers

1. Now when the system restarts you will need to press the F8 button on the keyboard continuously until you get to the Advanced boot options menu.
2. In the Advanced boot options window, you will need to move with the arrows on the keyboard and select the Safe Mode feature.
3. Press the Enter button on the keyboard.
4. Now that your Windows 10 starts you will need to log on with the administrator account.
5. Left-click or tap on the Desktop icon in the start screen.
6. Move the mouse cursor over to the lower right side of the screen.
7. From the menu that appears you need to left click on the Settings feature.
8. In the Settings menu, you will need to left click or tap on the Control Panel icon.
9. Now in the Control Panel window, you need to left click or tap on Device Manager.
10. In the Device Manager menu on the left side double click (left click) on the Display adapters category in order to expand it.
11. Now you will have there the graphics driver that you currently use in Windows 10 and you need to right-click on it.
12. Left-click on the Uninstall option.
13. Left-click or tap on the OK button on the next window that appears in order to confirm the uninstall process.
14. Take out the Windows 10 boot media and also restart your operating system.

4. Launch Startup Repair

1. First, you will need to place a Windows 10 boot disk into your CD/DVD drive.
2. Reboot your Windows 10 device.
3. Now after the restart of the operating system, your computer will go directly to the bootable disk (It might ask you to choose if you want to boot from the specific Windows 10 media and you will need to do so).
4. You now have the Windows Setup screen in front of you.
5. Left-click or tap on the Next button situated on the lower side of the screen.
6. Left-click or tap on the Repair your computer feature from the lower side of the screen.
7. In the Choose an option window you will need to left click or tap on the Troubleshoot feature.
8. In the next window, left click or tap the Advanced options feature.
9. Now left click or tap on the Command Prompt feature.
10. When the Command prompt window (black box) is in front of you type C: and press Enter.
11. Write in the command prompt window the following command and press Enter: BCDEDIT /SET {DEFAULT} BOOTMENUPOLICY LEGACY
12. Type Exit and press Enter to exit the command prompt window.
13. In the Choose an option window left click or tap on Continue.
14. Reboot your Windows 10 device.

5. Run the BSOD troubleshooter

BSOD errors are pretty common on Windows computers. For this reason, Microsoft added a very useful Blue Screen troubleshooter on the Settings page.

As its name suggests, you can quickly fix Blue Screen of Death errors with the help of this tool.

All you need to do is go to Start and select Settings, then click on Update & Security, select Troubleshoot and run the Blue Screen troubleshooter.

6. Use a Restore Point

If the problem persists, try restoring your computer to a previous working state by using System Restore. This involves you installing an image of your OS from a time before you had any issues with it.

By following the steps written above, you should be able to fix the stop code system_thread_exception_not_handled BSoD error from reappearing on your PC.

We also have another great article to fix all the System Thread exception not handled errors that you might encounter in Windows 10.

Another common error from the same error family is the atikmdag.sys system_thread_exception_not_handled error but we also have a guide on how to fix the atikmdag.sys.

Feel free to leave us a message in the comments section below if you know of any other method that we may have missed out on, and we will update this article as soon as possible.

FAQ: Learn more about Blue Screen of Death errors

• How do I fix system thread exception not handled?

Updating the drivers is a good solution but if that doesn’t work, our guide on how to fix the system thread exception will help you.

• What does 0xC000021A mean?

0xC000021A is a BSoD error code. We have an excellent list with the best tools to fix BSoD errors.

• What causes blue screen on Windows 10?

Corrupted or missing drivers and hardware components failure are the main culprits. However, we have an excellent guide on what are the causes for BSoD errors.