BSOD 80 (PAGE_FAULT_IN_NONPAGED_AREA): causes and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: PAGE_FAULT_IN_NONPAGED_AREA kernel code referenced invalid system memory that should have been resident. The parameters identify the address, access type.

Could be also:
Constant	Type	OS
ERROR_FILE_EXISTS	Win32 error	Windows
ELIBBAD	errno	Linux
EAUTH	errno	Mac
ENOTUNIQ	errno	Solaris

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PAGE_FAULT_IN_NONPAGED_AREA

PAGE_FAULT_IN_NONPAGED_AREA meaning

PAGE_FAULT_IN_NONPAGED_AREA is bug check 0x00000050. Kernel code referenced invalid system memory that should have been resident. The parameters identify the address, access type, faulting instruction, and a build-dependent subtype.

How to analyze the result

Resolve the instruction and accessed address, inspect PTE and pool state, determine whether memory was freed or never valid, and check recent drivers, filter software, faulty RAM, and storage errors that corrupted resident data.

Preserve the complete dump, all four parameters, Windows build, loaded modules, and the event timeline before changing drivers or firmware while investigating this result.
Run !analyze -v and follow the parameter-specific objects and the stack associated with this result rather than relying only on the symbolic name or a single probable-cause line.
Compare multiple dumps when available; a stable instruction or object path associated with this result is stronger evidence than a module that appears only after earlier corruption.

Recovery boundary

Correct the component that owned the invalid pointer or corrupted memory. Use special pool or Driver Verifier when a driver lifetime error is suspected, and hardware diagnostics when failures occur at unrelated addresses.

Official references

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