BSOD 183 (BOOTLOG_ENABLED): causes and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: Windows recorded that boot logging is enabled.

Could be also:
Constant	Type	OS
ERROR_ALREADY_EXISTS	Win32 error	Windows

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BOOTLOG_NOT_LOADED	ATTEMPTED_SWITCH_FROM_DPC

BOOTLOG_ENABLED

Boot logging enabled marker for BOOTLOG_ENABLED

BOOTLOG_ENABLED is bug check code 0x000000B7. This value is diagnostic context. It means the boot path is recording driver-load progress, which can be used to correlate a later crash or hang with driver-load ordering.

How to read it in a dump

Do not treat the marker as a failing driver.
It is useful for reconstructing boot order and comparing multiple boot modes.
Combine it with loaded and not-loaded entries.

What to check

Preserve the boot log before retrying many times.
Compare the last successful and failed boot logs.
Use it together with dump analysis rather than as a replacement for a crash dump.

References

Dump evidence

Preserve the complete dump, the four bug-check parameters, the exact Windows build, loaded-module list, and the event timeline immediately before the stop. AllStat summarizes the condition as “Boot Logging Enabled”; that sentence identifies the failure class, while the parameters and stack determine which object, driver, processor, or subsystem instance was involved.

Analysis order

Run WinDbg !analyze -v, then inspect the documented meaning of each parameter instead of relying only on the probably-caused-by line.
find the earliest abnormal event: driver update, firmware change, device reset, storage error, verifier report, resource exhaustion, or application hang connected with bootlog / enabled.
keep third-party filter, security, storage, graphics, and virtualization drivers in the module inventory; removing evidence before dump analysis can obscure the responsible path.

Do not repeatedly reboot a machine affected by this result before collecting the dump and event logs. Recovery actions should follow the component identified by the stack and parameters, not merely the symbolic stop-code name.

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