Easy to Fix System Thread Exception Not Handled Error in Windows 10

System Thread Exception Not Handled Blue Screen of Death (BSOD) is a very common problem among Windows 8 and Windows 10 users. And could occur anytime while start-up of Windows or while doing any random work. It’s unpredictable when it can occur, but for most users, it usually occurs at boot time. So we are mentioning several ways (applicable to both Windows 8 and 10 users) to fix this issue for users who gets BSOD at startup or when it appears unpredicted. And any of the solution will NOT require you to have bootable media of Windows 8 or 10 as most users don’t have these by default.

System Thread Exception Not Handled in Windows 8 and 10:

We have already written a solution of Windows 10 Blue Screen of Death (BSOD) and Internal Power Error. You should read this first before trying below given solutions.

Windows 8 and 10 has inbuilt recovery and if you ran into any startup issue during boot of OS, it’ll show up offering you options to fix your computer. But the question is, how to reach those options. Many people suggest to use Bootable CD or USB for windows, as they help getting users the same tools with convenience which are already there is operating system recovery system. So, in order to Fix System Thread Exception Not Handled Error in Windows 8 or 10, do following steps:

When you get BSOD, just close the PC using power button, press it continuously till it get switched off.
Power ON and OFF it abruptly when Windows logo appears during boot process. Repeat this 3-4 times, until windows show you various recovery options.
Assuming you reached the Windows 8 or 10 recovery options, go into Troubleshoot > Advanced Options > Command Prompt.
Run following command in it:
sfc /scannow /offbootdir=c:\ /offwindir=c:\windows

It’ll find some errors but shall not be able to fix all. Also run following command then:
bcdedit /set {default} bootmenupolicy legacy

Now close the command prompt and reboot the computer.
Also Read: Ultimate Guide to Turn off Windows 10 Privacy Settings

Find the Driver Which is Causing You Trouble

Install this free application named: WhoCrashed and run this utility to find out which driver is causing you SYSTEM_THREAD_EXCEPTION_NOT_HANDLED BSOD error.

Output of the utility should be similar as below:

  • If you check the file path, it shows that atikmdag.sys is the troublesome driver for me. It can vary for most users.
  • Or if you’re not in a condition to run the utility, then do following steps:
  • Now you need to open the computer in Safe mode. So, as soon as you turn ON the computer, keep pressing F8 function key along with it, until the OS shows you a menu of boot options.
  • Select Safe Mode and Enter.
  • During the boot or after login, when you get BSOD again, you’ll also find a file name along with System Thread Exception Not Handled. Output would be like System Thread Exception Not Handled (FILENAME.sys) where FILENAME could vary for users.

Following is a list of those FILENAME’s along with the associated driver:

  • Note down the file name somewhere.
  • Reboot and again you to abruptly restart computer to get into recovery mode of Windows 8 or 10.
  • Navigate to Troubleshoot > Advanced Options > Command Prompt.