What does BSOD 0xB5 (BOOTLOG_LOADED) mean?

 
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VIDEO_DRIVER_INIT_FAILURE BOOTLOG_NOT_LOADED

BOOTLOG_LOADED

Boot log loaded-driver marker for BOOTLOG_LOADED

BOOTLOG_LOADED is bug check code 0x000000B5.

This value is a boot-log marker, not a conventional failure root cause. It is useful when shown as part of boot logging because it identifies a driver that successfully loaded before a later failure.

How to read it in a dump

  • Use it as ordering evidence: what loaded before the crash or hang.
  • A loaded marker does not prove the driver is healthy; it only says the load step completed.
  • Pair it with BOOTLOG_NOT_LOADED entries to understand the boot set.

What to check

  • Compare ntbtlog entries around the failure.
  • Look at the next driver or service after the last loaded marker.
  • Do not create a remediation plan from this marker alone.

References


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