Againly
AgainlyInstant Windows Fixes
Sign inDownload free→
← Back to all guides
Performance & Drivers

System Thread Exception Not Handled – Fix

AG
Againly Tech Team
April 16, 2026

System Thread Exception Not Handled – Fix

The Blue Screen of Death (BSOD) with the "System Thread Exception" code is almost always caused by a faulty network or GPU driver. Againly fixes this automatically by analyzing your crash dump (minidump) and isolating the failing driver file.

Why this happens

  • Driver Overlap: Two drivers are trying to access the same memory address simultaneously.
  • Corrupt File System: The .sys driver file itself has been damaged during a hard shutdown.
  • Kernel Panic: Your security software (Antivirus) has blocked a critical system thread, thinking it’s malware.

Fix it manually

  1. Identify the File: Look at the BSOD screen. If it says nvlddmkm.sys (Nvidia) or rtwlanu.sys (Realtek), you know who to blame.
  2. Safe Mode Uninstall: Boot into Safe Mode and uninstall the offending driver in Device Manager.
  3. Run SFC/DISM: Open Cmd as Admin and run sfc /scannow to repair system files.

Fix it automatically with Againly

Againly's "SafePatch" automatically scans your crash logs and reverts the problematic driver to its last stable version without needing Safe Mode.

Instant Resolution

Fix this problem in 46 seconds

Stop wrestling with registry keys and driver settings. Let Againly automate the fix for you right now.

Download Againly Free →

Works on Windows 10 & 11 • No credit card required

System Thread Exception Not Handled – Fix | Againly