Multiples BSOD with Differents Error Code but all from the same Relative Address : ntoskrnl+501c40

[Luc CHEVRY]

Hi All,

I'm facing stranges BSOD on my computer.

It appends many times a day with different Bug Check Code but always at the same relative address : ntoskrnl+501c40.

I already did Memory Testing with MemTest86+ 2 times 4 passes but no memory errors found.
Crash appends more frequently after having set Data Execution Prevention on all Executables on the system.

I guess my PC got corrupted with some hacking tools but I have no clues nor tools except Windows Defender to search for this event !

If you need the MiniDump Folder to go deepeer in this please let me know

Regards,
Luc CHEVRY

 

[ChatGPT]

Luc,
I can absolutely understand your frustration—reinstalling Windows and still experiencing BSOD with ntoskrnl+5017d0 as the only clue is maddening. Here’s a breakdown based on community experience and the gathered evidence:

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What This Crash Means​

• ntoskrnl+5017d0 (same family as your prior offsets) is still a generic kernel crash location. It rarely means the kernel itself is the root cause—in almost all cases, it acts as the "messenger" when something deeper (often hardware, sometimes a stubborn or subtle driver issue) fails catastrophically.
• After a total clean reinstall (latest 24H2 image, drivers only from Windows Update/MS), you have eliminated most possible software/driver culprits.

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The Hard Truth, Based on Pattern​

1. This strongly suggests an underlying hardware issue.
   • The most common hardware root causes after a true clean install are:
     • RAM defects: Even if MemTest86 passes, intermittent or marginal DIMMs can pass several tests but fail under specific Windows loads.
     • Storage (SSD/HDD) faults: Especially bad controller sectors or a faulty cable/port.
     • Motherboard issues: Failing VRMs, bad traces, or issues in chipset/USB power delivery.
     • CPU instability: Rare, but possible (overheating, micro-cracks, or IMC errors).
     • PSU-related instability: Marginal power can crash the system kernel in unpredictable ways.
2. BSODs ‘pointing at’ ntoskrnl after a clean install are almost never OS bugs.
   • This is supported across countless community threads: when every possible driver/software cause is eliminated, hardware always becomes the next suspect .

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Next Steps: Deep Hardware Diagnostics​

1. RAM​

• Try with one module at a time (alternate slots).
• If possible, replace with a spare module, or borrow from another machine.
• Run Windows Memory Diagnostic in “extended” (not quick) mode overnight, and see if it gets a hit.

2. Storage​

• Download the vendor’s SSD/HDD diagnostic tool (e.g., Samsung Magician, WD Dashboard, or CrystalDiskInfo).
• Check for reallocated sectors, pending sectors, or any warnings.
• Try a different SATA/Power cable and a different motherboard port if possible.

3. CPU and Motherboard​

• Monitor temps with HWMonitor or similar, ensure you’re not overheating—especially with warm weather.
• Run a CPU stress test (Prime95 “Small FFT” for 20-30+ minutes). Any error or crash here points to CPU/power/motherboard.
• Inspect the board for bulging capacitors or discoloration.

4. PSU (Power Supply)​

• If you have access to another PSU, try swapping it in.
• Watch for unstable voltages in HWMonitor—large dips/spikes (>5% on 12v or 5v rails) are suspicious.

5. Minimal Hardware Test​

• Disconnect everything but main drive, CPU, one stick of RAM, onboard graphics (if available—remove add-in GPU), and run for a day.
• If stable, add devices back one-by-one.

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Extra Tips​

• If you see USB/Printer errors still appearing: This could indicate a damaged USB controller or persistent power/communication faults at the mainboard level.
• BIOS Update: Re-flash the latest BIOS/UEFI even if you think you already have it—sometimes flashing the same version resolves corruption.
• Swap User Profile again post clean-install—rare, but corrupt home directories or old synced settings can cause obscure issues.

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Summary​

You’ve done truly exhaustive software and OS troubleshooting. At this point, your symptom pattern and the evidence align almost perfectly with a lingering hardware issue—often RAM, storage, motherboard, or PSU. Community evidence strongly supports focusing your next diagnostics here .
Please don’t hesitate to update if you get a hit on a specific component. If you run advanced checks and still hit a wall, listing your full current hardware (including power supply make/model) may reveal a pattern or let us recommend further deep-dive steps.
Don’t give up—you’re following the right process, and these “phantom” kernel crashes almost always have a physical root!