Introduction: Encountering the “SYSTEM THREAD EXCEPTION NOT HANDLED” error on Windows can be disruptive and frustrating, as it often leads to unexpected system crashes or blue screen of death (BSOD) occurrences. This error typically indicates a problem with a specific system thread, causing the system to halt to prevent further damage. However, there are several troubleshooting steps you can take to resolve this issue and restore system stability. In this guide, we’ll explore various methods to fix the “SYSTEM THREAD EXCEPTION NOT HANDLED” error in Windows.

Understanding the Error:

The “SYSTEM THREAD EXCEPTION NOT HANDLED” error is usually accompanied by a stop code, such as 0x0000007E or 0x1000007E, and may occur due to various reasons, including:

  1. Incompatible or Faulty Device Drivers: Outdated, incompatible, or faulty device drivers can trigger this error.
  2. Corrupted System Files: Damage to critical system files can lead to system instability and trigger the error.
  3. Hardware Issues: Faulty hardware components, such as RAM or hard drives, can cause system thread exceptions.
  4. Software Conflicts: Conflicts between software applications or system services may result in this error.

Solutions to Fix the Error:

Solution 1: Update Device Drivers

  1. Press Win + X and select “Device Manager.”
  2. Expand the categories and right-click on the device with a yellow exclamation mark.
  3. Select “Update driver” and choose “Search automatically for updated driver software.”

Solution 2: Run System File Checker (SFC) Scan

  1. Press Win + X and select “Command Prompt (Admin).”
  2. Type sfc /scannow and press Enter to run the System File Checker scan.
  3. Wait for the scan to complete and follow any on-screen instructions if issues are found.

Solution 3: Check for Windows Updates

  1. Press Win + I to open Settings.
  2. Go to “Update & Security” > “Windows Update.”
  3. Click on “Check for updates” and install any pending updates for Windows.

Solution 4: Check for Hardware Issues

  1. Run hardware diagnostics, such as Windows Memory Diagnostic, to check for issues with RAM.
  2. Ensure that all hardware components are properly connected and functioning correctly.

Solution 5: Perform a Clean Boot

  1. Press Win + R to open the Run dialog box.
  2. Type “msconfig” and press Enter to open System Configuration.
  3. Go to the “Services” tab and check “Hide all Microsoft services.”
  4. Click on “Disable all” and go to the “Startup” tab.
  5. Click on “Open Task Manager” and disable startup programs one by one.
  6. Restart your computer and check if the error persists.


The “SYSTEM THREAD EXCEPTION NOT HANDLED” error in Windows can be frustrating, but by following the troubleshooting steps outlined in this guide, you can effectively diagnose and resolve the issue. Whether it’s updating device drivers, running a System File Checker scan, checking for Windows updates, diagnosing hardware issues, or performing a clean boot, there are several methods to try. By addressing the underlying causes of the error, you can restore system stability and prevent further occurrences of the “SYSTEM THREAD EXCEPTION NOT HANDLED” error on your Windows system.