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Help understanding the contents of my Dumpstack.log and cause of crash?

E S 20 Reputation points
2026-05-11T21:53:41.6166667+00:00

I've found a Dumpstack.log in my C drive. I understand that these are produced during/after a crash. It shows the date modified in my C drive as the 7th of May 2026, however, the date "initialized "in the dumpstack file (as you can read below) says 10th of May 2026.

  1. Does any know why those dates are different?

2.Could anyone help me understand what the following actually means?

3.I might be able to provide the corresponding minidump file if that would be helpful?

DLOGFILE00010000DUMP/

Dump stack initialized at UTC: 2026/05/10 22:54:11, local time: 2026/05/10 23:54:11.

#BugCheckCode 0x000000000000003B

#BugCheckP1 0x00000000C0000005

#BugCheckP2 0xFFFFF8063A86B9DC

#BugCheckP3 0xFFFFB00AF8DB4600

#BugCheckP4 0x0000000000000000

Progress 0x00000042

Elapsed BugCheck duration 00005352ms

Starting get secondary dump callbacks size.

Progress 0x00000052

Finish get secondary dump callbacks size.

Dump Type: 4, Total Dump Size: 1217917, Secondary Dump Size: 1003901.

Starting write of dump header.

Finish write of dump header.

Starting write of minidump data.

Finish write of minidump data.

Progress 0x00000044

Elapsed BugCheck duration 00005997ms

Starting invoking secondary dump callbacks.

Calling monitor secondary callback.

Return from monitor secondary callback.

Writing monitor secondary callback data.

Writing monitor secondary callback data done.

Calling invalid name secondary callback.

Return from invalid name secondary callback.

Writing invalid name secondary callback data.

Writing invalid name secondary callback data done.

Calling invalid name secondary callback.

Return from invalid name secondary callback.

Writing invalid name secondary callback data.

Writing invalid name secondary callback data done.

Calling wdiwifi secondary callback.

Return from wdiwifi secondary callback.

Writing wdiwifi secondary callback data.

Writing wdiwifi secondary callback data done.

Calling wdiwifi secondary callback.

Return from wdiwifi secondary callback.

Writing wdiwifi secondary callback data.

Writing wdiwifi secondary callback data done.

Calling rtkpcie secondary callback.

Return from rtkpcie secondary callback.

Writing rtkpcie secondary callback data.

Writing rtkpcie secondary callback data done.

Calling aswSP secondary callback.

Return from aswSP secondary callback.

Writing aswSP secondary callback data.

Writing aswSP secondary callback data done.

Calling IoBugCheckDriverData secondary callback.

Return from IoBugCheckDriverData secondary callback.

Writing IoBugCheckDriverData secondary callback data.

Writing IoBugCheckDriverData secondary callback data done.

Calling PortDriverStandard secondary callback.

Return from PortDriverStandard secondary callback.

Writing PortDriverStandard secondary callback data.

Writing PortDriverStandard secondary callback data done.

Calling \Device\DxgKrnl secondary callback.

Return from \Device\DxgKrnl secondary callback.

Writing \Device\DxgKrnl secondary callback data.

Writing \Device\DxgKrnl secondary callback data done.

Calling Wdf01000 secondary callback.

Return from Wdf01000 secondary callback.

Writing Wdf01000 secondary callback data.

Writing Wdf01000 secondary callback data done.

Calling blackbox - CI secondary callback.

Return from blackbox - CI secondary callback.

Writing blackbox - CI secondary callback data.

Writing blackbox - CI secondary callback data done.

Calling blackbox - Winlogon secondary callback.

Return from blackbox - Winlogon secondary callback.

Writing blackbox - Winlogon secondary callback data.

Writing blackbox - Winlogon secondary callback data done.

Calling blackbox - NTFS secondary callback.

Return from blackbox - NTFS secondary callback.

Writing blackbox - NTFS secondary callback data.

Writing blackbox - NTFS secondary callback data done.

Calling blackbox - CrashedProcess secondary callback.

Return from blackbox - CrashedProcess secondary callback.

Writing blackbox - CrashedProcess secondary callback data.

Writing blackbox - CrashedProcess secondary callback data done.

Calling blackbox - PNP secondary callback.

Return from blackbox - PNP secondary callback.

Writing blackbox - PNP secondary callback data.

Writing blackbox - PNP secondary callback data done.

Calling blackbox - BSD secondary callback.

Return from blackbox - BSD secondary callback.

Writing blackbox - BSD secondary callback data.

Writing blackbox - BSD secondary callback data done.

Calling secondary multi-part dump callbacks.

Starting TRIAGEDUMPDATA multi-part secondary callback.

Finish TRIAGEDUMPDATA multi-part secondary callback.

Starting SMBiosData multi-part secondary callback.

Finish SMBiosData multi-part secondary callback.

Starting SMBiosRegistry multi-part secondary callback.

Finish SMBiosRegistry multi-part secondary callback.

Starting SMBiosRegisters multi-part secondary callback.

Finish SMBiosRegisters multi-part secondary callback.

Starting SMBiosDataACPI multi-part secondary callback.

Finish SMBiosDataACPI multi-part secondary callback.

Starting PCI multi-part secondary callback.

Finish PCI multi-part secondary callback.

Starting Etw multi-part secondary callback.

Finish Etw multi-part secondary callback.

Finish calling secondary multi-part dump callbacks.

Progress 0x00000045

Finish invoking secondary dump callbacks.

Starting invoking dump complete callbacks; Type: 0x04.

Finished invoking dump complete callbacks; Type: 0x04.

Progress 0x00000046

Dump ended at UTC: 2026/05/10 22:54:11, local time: 2026/05/10 23:54:11.

Elapsed BugCheck duration 00006646ms

Progress 0x00000053

Dump completed successfully.

Windows for home | Windows 11 | Performance and system failures
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2 answers

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  1. Lychee-Ng 19,780 Reputation points Microsoft External Staff Moderator
    2026-05-13T14:00:35.96+00:00

    Sorry for the late reply, E S.

    Thanks for sharing the dump, it gives me quite a few details here. This type of crash means Windows attempted to access invalid memory during a system call. Since it occurred in win32kbase + DWM, it points to the graphics / desktop rendering stack.

    1 - Make sure everything is up to date

    • Go to Settings > Windows Update > Check for updates
    • Then go to Advanced options > Optional updates
    • Install all available updates and reboot.

    2 - Clean reinstall the graphics driver

    • Refer to the instructions here: How to clean install My GPU driver with DDU ? - Microsoft Q&A
    • Download Display Driver Uninstaller (DDU) and the latest driver from your GPU vendor (Intel / NVIDIA / AMD)
    • Boot into Safe Mode > Run DDU > remove your GPU driver completely
    • Restart PC then install the downloaded drivers.

    3 - Disable all overlays and background graphics tools

    • Discord overlay, Xbox Game Bar
    • NVIDIA GeForce overlay
    • MSI Afterburner / RTSS
    • Anything similar to those mentioned above.

    4 - Run system file checks

    • Open Command Prompt (Administrator)
    • Run: DISM /Online /Cleanup-Image /RestoreHealth
    • Then: sfc /scannow
    • Restart PC after both complete.

    From your files, this crash is tied to the graphics subsystem. So the most likely root cause is the GPU driver or related software. If the issue started after recent updates, another option is to consider rolling it back!

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  2. Lychee-Ng 19,780 Reputation points Microsoft External Staff Moderator
    2026-05-12T12:56:22.4033333+00:00

    Hi E S

    I understand you’re trying to interpret what this log means and what caused the crash. You’re on the right track looking at it. First, let me address your questions one by one:

    1 - The different dates

    • The Dump stack initialized (May 10) is when the crash actually happened
    • The Date modified (May 7) is when the file recorded to be last written on disk

    This mismatch can occur because the file was created/updated before, then later Windows overwrote the content without updating the metadata. A crash often happens very quickly, so the system prioritizes writing the data first and doesn’t always update the Dumpstack.log file timestamp correctly. What really matters is the actual crash date: May 10, 2026.

    2 - Short explanation from the log

    • The main focuses:
      • #BugCheckCode 0x000000000000003B = SYSTEM_SERVICE_EXCEPTION
      • #BugCheckP1 0xC0000005 = Access violation
    • Something (a driver or system component) tried to read/write memory it shouldn’t. This usually points to a driver problem. A few drivers stand out from your log include:
      • wdiwifi > Wi-Fi driver
      • rtkpcie > Realtek network driver
      • aswSP > Avast/AVG security driver
      • DxgKrnl > GPU/graphics subsystem
    • The rest of the log just means Windows was collecting crash data.

    3 - The minidump file

    If you can share it, or the output after running through a tool like WinDbg, it’d be very helpful. Because currently, this log still does not confirm the exact driver crashed. It only shows which components were active during crash dump collection.

    The exact cause requires the minidump (.dmp) file. However, the file may contain some private information, so I have initiated the Private Message. If you want to share any information, please send through there!

    In the meantime, based on the basic information I got from your logs, below are some suggestions. You can consider trying them out to see if the situation improves:

    1. Update key drivers: Go to your PC/laptop manufacturer website and download the latest packages for Network (Wi-Fi/Ethernet), Graphics (GPU), and Chipset drivers.
    2. If you are using Avast/AVG, temporarily uninstall it and restart your PC to test stability.
    3. Run system checks with Command Prompt (Admin) using the following commands:
      1. DISM /Online /Cleanup-Image /RestoreHealth
      2. sfc /scannow
    4. Make sure everything is up to date:
      1. Open Settings > Windows Update > Check for updates
      2. Also check Advanced options > Optional updates > Install if any.
      3. If your PC brand has a specific health app, run it (e.g. Dell, HP, etc.)

    You can either upload the dump file to OneDrive and share the link, or simply add .txt to the end of the file name and include it directly in your message. Another option is to open the file in WinDbg, run the Analyze command, and send over the results. Please go with whichever method feels most convenient for you.


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