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Notes

A collection of troubleshooting walkthroughs, how-tos, and notes. These write-ups are from real diagnostic issues as well as my personal notes collected from a lifetime in software and tech.

How-To

How to Diagnose a Windows Crash — Find Out What's Actually Wrong

Jul 15, 2026 · Peter McKechnie

Don't treat the symptoms — find the cause. Use Event Viewer and Reliability Monitor to build the timeline, Resource Monitor to catch live problems, and WinDbg to read the crash dump, then test one theory at a time.

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Troubleshooting

PC Freezing, Crashing, or Lagging in Games? Check This First

Jun 25, 2026 · Peter McKechnie

A client's Overwatch fell from roughly 240 FPS to 20–30. The old GTX 1080 Ti looked guilty, but the useful evidence was 97% RAM use and a nearly full Windows drive — here's how I narrowed it down before replacing anything.

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Troubleshooting

WSL2 CreateVm/HCS/ERROR_FILE_NOT_FOUND: The Repair That Worked

Jun 25, 2026 · Peter McKechnie

WSL2 stopped booting after a Windows update and returned CreateVm/HCS/ERROR_FILE_NOT_FOUND. The Ubuntu disk was still there; repairing the installed WSL package restored it — here's the diagnostic trail, including the fixes that did not apply.

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How-To

Reinstalling Your Graphics Driver — A Step-by-Step Walkthrough for Non-Technical Users

Jun 17, 2026 · Peter McKechnie

Glitching, black screens, or games crashing? A full driver reinstall often fixes it. Here's the calm, no-jargon, nothing-skipped way to do it with DDU — including the one BitLocker check you must not skip.

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Troubleshooting

DaVinci Resolve nvlddmkm.sys Crash: What Fixed Mine

Jun 16, 2026 · Peter McKechnie

DaVinci Resolve was tied to repeated nvlddmkm.sys blue screens on an RTX 4070. Here's how I isolated it — and the configuration changes that stopped the crashes without an RMA.

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Troubleshooting

SYSTEM_SERVICE_EXCEPTION BSOD: Avast Was Leaking Kernel Memory

Jun 14, 2026 · Peter McKechnie

My Windows 11 workstation crashed with SYSTEM_SERVICE_EXCEPTION every ~36 hours. The dumps blamed graphics — the real culprit was Avast leaking kernel memory, over a million un-freed allocations. Here's the full diagnostic trail, with the evidence.

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