Diagnosing a Windows Blue Screen of Death (BSOD)

A Blue Screen of Death (now technically a “Black Screen” on recent Windows 11 builds) always leaves a memory dump behind — the actual diagnostic evidence is right there, most people just don’t know how to read it.

# Windows keeps a minidump for each crash in this folder
Get-ChildItem C:\Windows\Minidump

# WinDbg (free, from the Microsoft Store) can analyze the dump directly
# Or use the built-in Reliability Monitor for a simpler summary
Start-Process "perfmon.exe" "/rel"

Reading the Stop Code

  • DRIVER_IRQL_NOT_LESS_OR_EQUAL — almost always a faulty or outdated driver
  • MEMORY_MANAGEMENT — often genuinely bad RAM; run mdsched.exe (Windows Memory Diagnostic)
  • CRITICAL_PROCESS_DIED — a core system process crashed, sometimes from corrupted system files (sfc /scannow)
  • WHEA_UNCORRECTABLE_ERROR — hardware-level error, frequently CPU/RAM instability from overclocking

The stop code alone (visible on the crash screen itself, or via Reliability Monitor afterward) narrows the cause dramatically before you even open a dump file — worth writing down or photographing before the machine reboots.