This stop code means Windows asked for memory that does not exist or is invalid. Faulty RAM is the leading cause, with a bad driver a close second. Jump to your situation below or work through the methods in order.
PAGE_FAULT_IN_NONPAGED_AREA (stop code 0x00000050) means Windows referenced memory in the area that must always stay resident, and the data was not there or was invalid. The single most common cause is faulty or failing RAM, which returns bad data so a valid lookup lands on garbage. A faulty driver corrupting memory is the next most likely, followed by corrupt system files and, occasionally, a failing disk or antivirus interference. The fix leads with memory: run Windows Memory Diagnostic or MemTest86 and reseat or replace any bad stick. From there, update storage and other drivers (or roll back a recent one), repair system files with SFC and DISM, and check the disk. The minidump can name a driver when memory tests clean.
Some kernel memory is marked nonpaged, meaning it must always stay in physical RAM and never be paged out to disk. When Windows looks there and finds the page missing or invalid, something has gone badly wrong with memory, and it stops.
The most direct explanation is that the RAM itself is faulty, so the correct data is simply not where it should be. A driver that scribbles over memory it does not own causes the same symptom. That is why testing memory first, then drivers, resolves nearly all cases.
“PAGE_FAULT_IN_NONPAGED_AREA basically means the memory that should always be there was not, so I test the RAM before anything else, that is the cause more often than not. MemTest86 overnight tells the truth. If the memory is clean, it is usually a driver corrupting things, so I read the minidump for a .sys name and update or roll that back. Reset any memory overclock to stock too, bad timings throw this exact stop code.”
.sys file it names.DISM /Online /Cleanup-Image /RestoreHealth then SFC /scannow from an elevated prompt.chkdsk /f /r on the system drive to find disk errors.PAGE_FAULT_IN_NONPAGED_AREA is a memory problem until proven otherwise, so test RAM first with MemTest86 and replace any failing stick. If memory is clean, read the minidump for a driver and update or roll it back, and reset any memory overclock to stock. Repair system files and check the disk last.
If RAM and drivers both check out but it persists, run Driver Verifier on third-party drivers to catch one corrupting memory, and review the disk's SMART health in case the drive is failing. You can also submit your error to us for a tailored fix.