System Thread Exception Not Handled New

Some security tools inject memory allocation routines. Temporarily uninstall (not just disable) any non-Microsoft AV.

If no file is listed, proceed with the universal troubleshooting steps below. Step 2: Boot into Safe Mode

!analyze -v

Essential Windows files, such as those in the file system, may have been damaged. How to Fix System Thread Exception Not Handled system thread exception not handled new

If the error literally shows What failed: new (no .sys extension):

New updates sometimes deprecate old APIs that drivers rely on. Rolling back restores compatibility.

Drivers are the translators between Windows and your hardware. If a driver tries to execute a command that the hardware rejects or cannot understand, the system thread crashes. Some security tools inject memory allocation routines

Once your system is stable, you can prevent future iterations of the SYSTEM_THREAD_EXCEPTION_NOT_HANDLED error by implementing a few maintenance habits:

If the error mentioned nvlddmkm.sys or amdkmdag.sys , or if you suspect your display driver is at fault, a standard reinstall will not work. You must completely purge the old drivers.

Let both complete. They will repair missing or corrupted kernel components. Step 2: Boot into Safe Mode

Software troubleshooting isn't the only approach; underlying hardware issues can also trigger the SYSTEM_THREAD_EXCEPTION_NOT_HANDLED error.

While the general troubleshooting steps work for most, here are some specific, proven fixes for common scenarios.