How to Fix PAGE_FAULT_IN_NONPAGED_AREA (Windows)
Quick Answer: The PAGE_FAULT_IN_NONPAGED_AREA (0x00000050) error typically indicates that the Windows kernel or a device driver attempted to access a memory page that was not present in the non-paged pool, often due to corrupted RAM. The most likely cause is a faulty RAM module. Begin by running the Windows Memory Diagnostic Tool (mdsched.exe). This will perform a comprehensive memory test, and you should expect to see specific error reports indicating a hardware fault if RAM is indeed the culprit.
What Causes This Error
- Defective or failing Random Access Memory (RAM) modules, especially those with intermittent errors.
- Corrupted or incompatible device drivers, particularly for network adapters, storage controllers, or graphics cards, attempting to write to protected memory regions.
- Damaged or inconsistent Windows system files or kernel components, leading to incorrect memory management calls.
- Overclocking instability or incorrect BIOS/UEFI memory timings, causing memory access violations.
- Malware or rootkits that have compromised kernel-level processes, leading to unauthorized memory access.
- Issues with recently installed hardware or software that introduces conflicting drivers or memory allocation schemes.
Step-by-Step Fixes
Fix 1: Run Windows Memory Diagnostic and Test RAM
Press Win + R, type "mdsched.exe", and press Enter. Choose "Restart now and check for problems (recommended)".,Allow the tool to run a full diagnostic scan. This may take several minutes and multiple passes.,Note any errors reported upon restart. If errors are found, physically swap RAM modules to isolate the faulty stick.,If multiple RAM sticks are installed, test them individually in different slots to rule out a faulty slot or specific module.,Replace any identified faulty RAM module with a new, compatible one.
Fix 2: Update or Roll Back Device Drivers
Press Win + X and select "Device Manager".,Expand categories like "Display adapters", "Network adapters", and "Storage controllers". Right-click on each device and select "Update driver" > "Search automatically for drivers".,If the error started after a recent driver update, right-click the device, go to "Properties" > "Driver" tab, and select "Roll Back Driver" if available.,For critical drivers (e.g., chipset, GPU), visit the manufacturer's official website to download and install the latest Windows 10/11 compatible drivers.,Restart your PC after updating or rolling back drivers.
Fix 3: Perform System File Checker (SFC) and DISM Scans
Open Command Prompt as an administrator (Search for "cmd", right-click, "Run as administrator").,Type "sfc /scannow" and press Enter. Allow the scan to complete, which will check for and repair corrupted system files.,After SFC, run the Deployment Image Servicing and Management (DISM) tool. Type "DISM /Online /Cleanup-Image /RestoreHealth" and press Enter.,Allow DISM to complete. This command repairs the Windows image itself, which SFC relies upon.,Restart your computer after both scans have finished, even if no errors were reported.
Fix 4: Check Disk for Errors and Bad Sectors
Open File Explorer, right-click on your system drive (usually C:), and select "Properties".,Go to the "Tools" tab and under "Error checking", click "Check".,If prompted, choose "Scan drive" or "Scan and repair drive". This may require a restart to perform the scan.,Alternatively, open Command Prompt as administrator and type "chkdsk C: /f /r /x" (replace C: with your system drive letter).,Press Enter. If prompted to schedule the check on next restart, type 'Y' and restart your PC. This command fixes errors and recovers data from bad sectors.
Advanced Fixes
Advanced Fix 1: Disable Fast Startup
Go to Control Panel > Power Options > Choose what the power buttons do.,Click "Change settings that are currently unavailable".,Uncheck the box next to "Turn on fast startup (recommended)".,Click "Save changes" and restart your PC. Fast Startup can sometimes cause driver conflicts or memory issues during boot.
Advanced Fix 2: Analyze Crash Dump Files with WinDbg
Ensure your system is configured to create minidump files (System Properties > Advanced > Startup and Recovery > Settings).,Download and install the Windows Debugging Tools (part of the Windows SDK).,Open WinDbg Preview, go to File > Open Crash Dump, and select the latest .dmp file from C:\Windows\Minidump.,Configure symbol path (e.g., srv*C:\Symbols*https://msdl.microsoft.com/download/symbols).,Use the '!analyze -v' command to get detailed information about the crash, including the faulting module or driver, which can pinpoint the exact cause.
FAQs
Q: What specifically causes the 'Non-Paged Area' to fault?
A: The 'Non-Paged Area' refers to a section of virtual memory that is guaranteed to remain in physical RAM and cannot be swapped out to the page file on disk. A fault occurs when the operating system or a driver attempts to access a memory address within this critical area that is invalid, corrupted, or no longer exists, often due to hardware failure (RAM) or a severe driver bug.
Q: Can malware or a virus trigger PAGE_FAULT_IN_NONPAGED_AREA?
A: Yes, sophisticated malware or rootkits that operate at the kernel level can corrupt system processes or drivers, leading to unauthorized or incorrect memory access within the non-paged pool. This can manifest as a PAGE_FAULT_IN_NONPAGED_AREA error. Running a full system scan with a reputable antivirus solution is a recommended troubleshooting step.
Q: Is this error primarily a hardware or software problem?
A: While it can be triggered by both, PAGE_FAULT_IN_NONPAGED_AREA is most frequently indicative of a hardware issue, specifically faulty RAM modules. However, severely corrupted device drivers or critical Windows system files can also cause this error by mismanaging memory or attempting to access invalid memory locations in the non-paged pool.
Q: How can I definitively confirm if my RAM is faulty without replacing it immediately?
A: The most definitive way is to run a comprehensive memory diagnostic tool like Windows Memory Diagnostic (mdsched.exe) or MemTest86. If errors are reported, and you have multiple RAM sticks, test each module individually in different slots. Consistent errors with a specific module across different slots strongly indicate a faulty RAM stick. Absence of errors might point to a driver or software issue.
Q: Will reinstalling Windows guarantee a fix for this error?
A: Reinstalling Windows will resolve any software-related causes such as corrupted system files, problematic drivers, or malware. However, if the root cause is faulty RAM or another hardware defect, reinstalling Windows will not fix the error, and it will likely reappear. It's a valid last resort for software issues but should follow hardware diagnostics.