System Thread Exception not Handled ntfs.sys [Fixed]

Ivan Jenic
by Ivan Jenic
Troubleshooting Expert
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  • The system_thread_exception_not_handled ntfs.sys is a Blue Screen of Death error that indicates a system crash.
  • A system thread exception not handled can restart your PC in a loop if you don't take action. 
  • A good solution to fix this BSoD error is to use dedicated repair software.
  • Because a possible culprit for this error is a driver, you can update it using a clever software tool.
System Thread Exception not Handled BSOD windows 10
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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This error message is caused by an outdated graphic driver.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.
windows troubleshooters
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.
      Restoro first scan
  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.
      Restoro repair
  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. DriverFix Updater 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.
DriverFix Updater Scan
  1. DriverFix will now show you all the drivers that have issues, and you just need to select the ones you’d liked fixed.
DriverFix Updater Results
  1. Wait for DriverFix to download and install the newest drivers.
DriverFix Updater Update Drivers
  1. Restart your PC for the changes to take effect.


Keep you GPU on the peaks of their performance without worrying about its drivers.
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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

blue screen 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.

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My laptop is dell inspiration 14 and I had upgraded my laptop from Windows 8.1 to Windows 10. But from that time my some apps doesn’t open like store, Xbox, 3d builder, get office,camera and many more apps. After a few days, when I was making a new software, while adding some c++ codes and working on it, my computer screen appears black and after some time a blue screen appears and says my pc ran into a problem which name system thread expectation not handled and restarts. Then I lost my all work which I was working. I had tried the above steps but it did not work. Please give some another way.

I bought your program and my system has had the BSOD three times since then – can’t say I’m thrilled with the results.

All i did was to power off the system, Remove the RAM, Replace it and restart the System and Voila!!!!
Everything was ok

Thank you so much. I searched for and tried so many other solutions and nothing worked. Yours worked great. I was just about to pitch my laptop and get a new one so thank you for saving it! 🙂

On a PC. When I type the command prompt in I get “the boot configuration data store could not be opened.” Tried F8 anyways, SafeMode options shows, I click on it, crashes with same error code anyways. Windows 8.1 on anow external USB drive.

Shut Your PC Down And Wait For 15-30 Minutes and Turn Back On.
Your PC May Show It Is Connected But When You Open Your Web Browser It Says It Is Not Connected. DO NOT WORRY. Just Tell Your Pc To Restart. You do not Have To Wait On The Restart.

ummmm, the report keeps showing even after I insert my bootable disc, I already changed my boot order in BIOS and boot from usb but the error keep showing up and can’t get into the installation page,, what should I do ? 🙁


Did not help. I tried to boot my laptop using a windows bootable dvdrom. It begins to boot but then gives the same error after 10secs.

Did not help. Ehen i try to noot my laptop using a windows bootable dvdrom it begins to boot but gives the error after 10secs.

So you have access to one laptop only, and somehow it got broken, get system_thread_exception_not_handled error and looped all the time.
What can you do?

Hi take the battery out, unplug the computer hold down the power button for 10 seconds plug it back up power it back on

Thanks to one over at microsoft forum I could get my laptop to work again even while it was showing the blue screen after I booted from an usb or dvd. THIS finally solved my problem.

Hi all, here’s a quick fix if you’re having this problem on a laptop:

Turn it off, remove the battery, unplug it from its power source, leave it off a few minutes, hold down the power button for 5-10 seconds, plug power back in BUT NOT THE BATTERY, turn on laptop. It should start normally. Then put battery back in at your earliest convenience.

Hope it works for you, it’s worked for me every time I have it on my Acer Aspire.

So this worked long enough for me to install an updated intel HD graphic driver for Windows 10. I first had to install the Intel Driver Update Utility Installer to figure out which driver I needed. I was on a version 10 and needed version 15.

OMG!!!! Yvonne, thank you so much, worked like a bomb…..only found this tip after 4 hours of trying different things

OMFG. I spent more than a day trying different things with different bootable media and nothing seemed to work. My laptop wouldn’t boot from a recovery disk or installation media that I created using a different computer. This is awesome! It worked on my Gateway laptop. I can’t thank you enough! 🙂

Thank you Yvonne. Did as you said and it worked right through. Thank you very much buddy. God bless you as you made my day. – Ramesh from Dubai UAE.

Thx a lot Yvonne! :-))) This was the rescue for my failed attempt to upgrade to win 10.
Now I am back at Win 7 again. It works still quite ok!

Yvonne, you’re a life saver!! Thank you so much. Works like a charm. What an easy solution and what a relief !!! Thanks!!!!!

Thank you so much. This worked for me. I was on HP customer support for 90 minutes and they were trying to charge me before even attempting to help me. Fortunately, this solution was a life-saver.

Whew, I got my machine working and I promptly made a recovery drive with a USB. Just type “recovery drive” into Cortana’s search window and then look around your house for a USB that has 4GB or more, and you’ll have something to pop in if you run into trouble.

Hi, i just recently updated to windows 10 online. Since then i’ve being having this BSOD and error message “system thread exception not handled”. I have since then completely di-installed my Graphics driver, but haven’t solved this problem at all i.e. i still recieve the error message with the BSOD.
What can i do to resolve this problem since its obvious that my graphics driver is not the cause?

Well I am absolutely livid this is happening to me too. It has made my PC useless. I don’t have a boot disc either. You would think that in determining if a computer was compatible or not that this sort of aspect would be considered i.e outmoded graphics card or whatever! I mean what THE HELL??? My computer doesn’t even stay on long enough for me to enter safe mode or ANYTHING!!!!!

What if you do not have the Windows 8.1 bootable media? How then do you go about repairing your PC? Is that the only way to make the repairs?

I need help. I upgraded from windows 7 home to windows 10. Ugrade failed in second phase(installing drivers) and my laptop turned off. Now if I try to turn it on I get the blue screen with errer message: system thread exception not handled.
I don’t have a boot disk.
what can I do

Ran those commands in cmd, went to continue, attempted to start in safe mode, gave same error, and restarts…. Upgraded from Win 7 Home Premium to Win 10…..

Having received the windows 10 download for free, where/how do I get/find the Windows10 boot disk? They do not tell in their explanation on how to solve the “system thread exception not handled” problem.

i already did every steps so why does the system_thread_exception_not_handled still appear so confused dont know what to do

I hate windows 10 i kmow nothing about computers so thats more money down the drain for some to fix this

esta laptop toshiba fue un obsequio desde el extranjero. Vino con el Windows 8 original ya instalado… Por lo tanto no tengo el Disco de Inicio de Windos 8.1 por favor si alguien pudiera indicarme qué es lo que puedo hacer… gracias de antemano.

These steps did not help me, but I was able to finally get it to boot into Windows. What I did:

1. Booted to Windows 8 CD (or wait for Windows 8 to show the repair window and click on Advanced Options).

2. Go into Troubleshoot > Advanced Options > Command Prompt

3. Run sfc /scannow /offbootdir=c: /offwindir=c:windows

This found some errors, but said it could not fix all of them. Close the Command Prompt.

4. Remove the Windows boot disk if that was used. Then shut down the computer.

5. Restart the computer and keep pressing F8. It should display the list of boot options. (if not, follow the steps in this article)

6. Select Safe Mode.

This time, I got “System Thread Exception Not Handled (SynTP.sys)”. The file in parentheses is the driver causing the error. Write that filename down.

7. Put the Windows boot CD back in and boot into it, or restart and get it back to the point where it fails to do Automatic Repair, then go into Advanced options.

8. Go back to Troubleshoot > Advanced Options > Command Prompt.

9. Run these commands in order:

cd windowssystem32drivers
ren SynTP.sys SynTP.old

(Replace “SynTP.sys” with the name of the driver file that was in the blue screen error message.)

10. Remove the CD, close out of command prompt, then restart Windows.

11. In my case, this booted into Windows successfully.

Didn’t work. Failed after step 20. It just returns to the same error as before. It does not boot into Windows using Safe Mode either.

I don’t have a boot disk. Bought my laptop from Best Buy 4 months ago and it didn’t come with any disks. Model HP 15-g014dx, touch screen…. I get this error message several times a day also get where it looks like a tv channel with a bad connection/staticky… 🙁 about to just take it to them and let their Geek Squad deal with it.

need a help, i’m using acer aspire v5 with windows 8.1 but i have some problem with its start menu, like my start menu just open but the applications are not working, for e.g when i try to open my store the store is not opened its just bling and then appear on taskbar but not work, so please help me.

This seems like a pretty involved way to replace the display driver. I have aToshiba C55t-A running Windows 8.1 on an AMD A6. My problem is that I’m using the older (2013) video driver intentionally because the newer driver for my graphics card is a complete failure — most videos (YouTube, etc) turn blank green or gray screen. Audio works but no video. Tried every remedy. After removing and reinstalling the driver several times, I gave up on the current driver and rolled back to the prior driver. With the prior driver, the video works fine, but periodically I get the “System Thread Exception Not Handled” and it reboots. Big pain in the neck. So no, I don’t want the latest driver. Any other solution?

Thanks this helped fixed an issue I was having with a Toshiba Portege laptop. I would like to return the favor of your effort.

You can access the Device Manager window much more quickly in any version of Windows by using the “Run…” command (Windows Key+R) and typing “devmgmt.msc” and clicking the OK key or hitting Enter/Return on the keyboard . This will save a lot of steps in your procedure.

Thanks again. This fixed a recent issue that was causing me to consider replacing the computer.

Problem with your method is – is it “My Computer” or “Computer” or “This PC” or none-existent in the Start menu (assuming there even is Start Menu)? My way works regardless of OS version or Start Menu configuration.

Any of those, they’re all the same. On Win8 which doesn’t technically have a start menu you can still right click on the Windows icon and choose Computer Management.

Hi take the battery out, unplug the computer hold down the power button for 10 seconds plug it back up power it back on

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