Windows PAGE_FAULT_IN_NONPAGED_AREA — Advanced Diagnosis Guide

Advanced troubleshooting for PAGE_FAULT_IN_NONPAGED_AREA including minidump analysis, driver identification, pool tag analysis, and hardware testing. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: Stop code 0x00000050 — code attempted to access invalid memory that should always be resident. Nonpaged pool memory is kernel memory that cannot be paged to disk — it must always be in RAM. Parameter 2 = 0 means read access, Parameter 2 = 1 means write access violation. The faulting address (Parameter 1) helps identify if it is a null pointer, freed memory, or random corruption. Minidump analysis with WinDbg is the most reliable way to identify the root cause. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Faulty driver accessing freed memory (use-after-free bug). Defective RAM causing bit flips in nonpaged pool. Antivirus filter driver with memory corruption bug. Corrupted page table entries due to hardware or driver faults. Kernel pool corruption from buffer overflow in a driver. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Enable minidump: System Properties > Advanced > Startup and Recovery > Small memory dump (256 KB). Analyze dump with WinDbg: !analyze -v to get the faulting module name. If a .sys driver is named: update or uninstall that specific driver. Run extended MemTest86 (8+ passes) to check RAM thoroughly. Use Driver Verifier on suspected drivers: verifier /standard /driver suspicious.sys. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our Windows Error Codes collection on Error Codes Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.