System Thread Exception Not Handled Portable Jun 2026

This is a Blue Screen of Death (BSOD) error that typically appears during Windows startup, shutdown, or when resuming from sleep/hibernation. It indicates that a system thread generated an exception (an error condition) that the Windows kernel didn’t catch or handle.

The most useful official documentation regarding the (Stop Code 0x0000007E) error is the Microsoft Learn Bug Check 0x7E Reference .

Navigate to > Troubleshoot > Advanced options > Startup Settings > Restart . Press 4 or F4 to start in Safe Mode. 3. Update or Roll Back Drivers

Sometimes, the blue screen will list a specific file next to the error code. Identifying this file can save you hours of troubleshooting: Related to NVIDIA display drivers. system thread exception not handled

Go to → Install all pending updates, including optional driver updates.

If you identified a specific driver file (like igdkmd64.sys ) and updating didn't work, you can force Windows to create a fresh copy:

Repeat this . On the third restart, Windows will enter the Automatic Repair environment. This is a Blue Screen of Death (BSOD)

When the error appears, it often shows a at the bottom of the screen (e.g., nvlddmkm.sys , igdkmd64.sys , tcpip.sys , ntoskrnl.exe , dxgkrnl.sys ).

If Windows won’t start normally:

To troubleshoot and fix the "System Thread Exception Not Handled" error, try the following steps: Navigate to > Troubleshoot > Advanced options >

Restart your computer. Windows will attempt to reinstall the driver upon reboot. Summary Table: Quick Fixes Reinstall Display Drivers (use DDU for a clean wipe). Corrupt System Files Run SFC and DISM commands. Overclocking Disable CPU/GPU overclocking in the BIOS. Faulty RAM Run the Windows Memory Diagnostic tool.

: In some cases, disabling memory caching or shadowing in the BIOS can resolve the conflict.

If the error started right after an update, select Properties > Driver > Roll Back Driver instead. 4. Repair System Files (SFC and DISM)