The System Thread Exception Not Handled Error is an error generally faced by Windows 8 and Windows 10 users and are caused by outdated or incompatible drivers and occurs during the booting of the PC.

There is a free application named Who Crashed which helps in finding out the faulty drive. It is unpredictable as this error can occur anytime while starting up of computer or while doing work. is a temporary error that prevents logging in to Windows.

When this error has occurred, the blue screen of death will appear with the error code System_Thread_Exception_ Not _Handled. It makes the computer impossible to work as this error is commonly seen on boot up and makes the computer stuck on a reboot loop.


This error code is generally accompanied by the numbers like 0x00007E, 0x100007E and if lucky it is accompanied by the file name that indicates which graphic driver is causing the error like atikmdag. sys, nvlddmkm.sys, igdkmd64.sys, etc.

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How To Fix System Thread Exception Not Handled Error?

As this error does not even allow the computer to open, it is important to fix the error as early as possible to ensure the working of the system. The first step to fix the error is to boot the system to safe mode to break the reboot loop.

If this doesn’t work, there are furthermore solutions to fix the System Thread Exception Not Handled error like:

Method 1: Renaming Of The Dilemmatic Driver

When the error code system_thread_exception_not_handled is accompanied by a file name rather than numbers like atikmdag. sys, igdkmd64.sys, the file name should be renamed so that Windows creates a new copy of the driver file and reinstall it to remove the error but you should know on what hard drive the driver was installed on first.

Here are the steps to rename the faulty file:

Step 1- Go to Start, open File Explorer and insert the Windows Recovery Drive or Repair Disk.

Step 2-Select the desired language and then select Next.

Step 3-At the left bottom of the screen, click on the Repair button.

Step 4-Click on Troubleshoot and go to Advanced Options.

Step 5-Select Command Prompt and enter the following command and rename the file name “.sys” as “.old”:

C:cd\windows \system32\drivers


Step 6-Type Exit and then restart the system.

There is one more way

Method 2: Immobilise Hardware Acceleration

Hardware Acceleration is a technique in which the hardware is forced to work faster than the standard computing running on the general CPU. If it becomes difficult to predict the cause of the BSOD, the best solution is to temporarily disable the hardware acceleration as it sometimes leads to freezing and crashing.

Disabling hardware acceleration is different for every browser, there are different steps to disable hardware acceleration in Chrome, Mozilla Firefox, Internet Explorer. To immobilize hardware acceleration in Chrome, the steps are as follows:

Step 1- Open Google Chrome.

Step 2- Type chrome://flags in the address bar and press Enter.

Step 3- Go to the Settings and click on Show Advanced Settings.

Step 4- Unmark the Use Hardware Acceleration when required.

Step 5- Restart the PC to check the result.

Method 3: Uninstallation Of The Malfunctioning Driver

When the problematic driver is known to us, one solution is to uninstall it to avoid the error as the error is caused by outdated or incompatible errors and reinstall or update the driver. If the driver is causing the system thread exception not to handle the error.

It will not enable the computer to start and work, no chance will be left than uninstalling the problematic driver and reinstalling it again to remove the malfunctioning or issues that were recurring.

Reinstallation will make the drive new and fresh to use on. Some steps need to be followed to uninstall the driver, that is:

Step 1-Press Windows + R to open the Run box.

Step 2-Type “cmd” and click on OK. Run the Command Prompt.

Step 3-Insert the command:

bcdebit /set {default} bootmenupolicy legacy

Step 4-Press enter to enable legacy advanced boot.

Step 5-Type Exit and Restart the computer.

Step 6-To enter into the Advance boot options screen, press the F8 key.

Step 7-Once it is held on the Advanced boot Options screen, it will allow access to the windows computer by selecting the Safe Mode.

Step 8-A Run box will appear, type dev mgmt. msc and click on OK. You will enter into the Device Manager, select which driver is causing trouble and right-click it to uninstall the driver. Click OK.

When the installation process is completed, go to the manufacturer’s website and install the latest driver and restart the PC.

Method 4: Restoring Your PC to a Former Moment

If you have tried reinstalling, updating but the error is still there, the last solution to resolve this error is to restore the system. Restoring will help Windows to come to its early state. It is advisable to check the backup before restoring as restoring can lead to loss of data.

Try to restore the points each time when installing new software. Windows 10 has a feature of automatically restoring the points periodically before the change of each system. Restoration can be done by inserting a system repair disk.

Following are the steps that help in restoring the system:

Step 1- Insert the System Repair Disk into the computer and choose the preferred language.

Step 2- Click on the Repair option, then click on Troubleshoot and select Advanced options.

Step 3- Select System Restore from the options present in the advanced options screen and follow the given instructions to restore the PC.

Step 4- Now Restart the system to check whether the error is still present or is resolved.

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System Thread Exception Not Handled Error is a very common blue screen of death error that generally occurs when something goes wrong or by outdated drivers, etc. A basic solution to this problem is to either reboot the system, sometimes the system reboots automatically, restart the loop or reinstall the faulty driver.

It becomes easier when you know the cause behind the error and the part where the fault is present then the solution accordingly. It becomes easier when the error comes with the file name. It is complicated to fix this error but there are different methods present to resolve it.