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STATUS_SYSTEM_POWERSTATE_TRANSITION
A coordinated system power transition is in progress
System power changes are ordered operations across the power manager, device stacks and platform firmware. Drivers receive power requests and map the target S-state to suitable device D-states. This informational status indicates that the transition has started; temporary I/O queuing or device unavailability can be expected until it completes.
Do not diagnose the status itself as the fault. Find the transition that does not finish or the component that rejects it. The source and target states, power action, outstanding power IRPs and device stack are more useful than a generic sleep or shutdown label.
What to inspect
- Record source and target S-states, power action and transition timestamp.
- Trace outstanding device power IRPs and the longest driver callbacks.
- Compare firmware-supported sleep states with powercfg output and device capabilities.
References
- Microsoft: System and device power states
- Microsoft: Kernel-mode power manager
- Microsoft: Device power states
- Microsoft: powercfg command-line options
- Microsoft Open Specifications: NTSTATUS values
- ReactOS source: kernel power manager
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