Fix PAGE_FAULT_IN_NONPAGED_AREA (0x50) in Windows 7/Vista/XP (Historical)

Historical support note: Windows XP, Vista, and 7 are all out of support.

PAGE_FAULT_IN_NONPAGED_AREA has bug check value 0x00000050. Microsoft says it means invalid system memory was referenced. That can be caused by faulty driver or service code, antivirus software, a corrupted NTFS volume, or failing hardware such as RAM or video memory.

1. Look at what changed immediately before the crash

If the blue screen began after installing or updating a driver, antivirus product, disk/filter utility, or other low-level software, undo that change first.

If Safe Mode starts successfully on the affected legacy Windows version, use it to remove or roll back the suspected software.

2. Check the driver named by the crash

When Windows identifies a driver on the blue screen or in a dump file, update or roll back that specific driver. Check Event Viewer for errors in the same time window.

3. Check the disk/file system

Microsoft lists a corrupted NTFS volume as one possible cause. Back up important data and run appropriate disk diagnostics if there are filesystem errors, bad-sector warnings, or other signs of storage failure.

4. Test memory and other hardware

Run memory diagnostics and the PC manufacturer’s hardware tests. Repeated 0x50 crashes with changing faulting modules can be consistent with unstable hardware, but the stop code alone does not prove that RAM is bad.

5. Do not install old hotfixes blindly

The original article linked to several historical Microsoft hotfixes. Such fixes applied only to specific symptoms/builds. Do not install an old hotfix merely because the top-level stop code is the same.