What does HRESULT 0xC0262433 (ERROR_GRAPHICS_ADAPTER_CHAIN_NOT_READY) mean?

 
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ERROR_GRAPHICS_CHAINLINKS_NOT_ENUMERATED ERROR_GRAPHICS_CHAINLINKS_NOT_STARTED

ERROR_GRAPHICS_ADAPTER_CHAIN_NOT_READY

Why this is not a generic GPU failure: graphics adapter chain not ready

Windows reports ERROR_GRAPHICS_ADAPTER_CHAIN_NOT_READY (0xC0262433) at the linked checkpoint. Here, the complete adapter chain could not reach a startable state. That narrows the first investigation to linked-adapter aggregate readiness instead of the entire GPU stack.

The smallest evidence set

Capture itemWhy it matters
Current graph statelead adapter, chain members and their PnP/power transitions
Supporting tracedevice-instance IDs, lead/chain role, PnP problem codes, Dx states and start/power IRP ordering
Object identitylinked-adapter aggregate readiness
Rejected conditionthe complete adapter chain could not reach a startable state
What to capturestate of every member, first failing start result, power state, enumeration and driver versions

A/B test for the exact condition

  1. Capture the failing state. Record state of every member, first failing start result, power state, enumeration and driver versions.
  2. Start each member independently in a controlled diagnostic environment to locate the first failure.

The comparison with ERROR_GRAPHICS_CHAINLINKS_NOT_STARTED is especially useful: ERROR_GRAPHICS_CHAINLINKS_NOT_STARTED states that members simply have not started yet.

Safe remediation

Repair the first failing member or dependency before retrying the chain.

  • debug-layer, ETW or driver diagnostics no longer report the rejected linked-adapter aggregate readiness contract during the same scenario.

Implementation notes

Technical references


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