Qualify Exhibition PC Recovery After a Power Outage

Qualify power outage recovery as a complete chain: power returns, firmware starts the PC if supported, Windows boots, required services become ready and the application reaches a safe operating state. Wake-on-LAN is not a substitute for this test. A PC that has lost standby power may need a different recovery mechanism from one that is sleeping.

Document the power sequence

Identify which devices share the interrupted supply: PC, network switch, serial gateway, displays and any local time or DHCP service. If all restart together, a controller can become active before its dependencies. Record the intended order and what should happen when a dependency starts late.

Microsoft's system power states distinguish operating and low power states, but do not certify an OEM's AC restoration firmware setting. Consult the actual motherboard or PC manufacturer's manual for any “restore after power loss” option and verify it physically. Do not assume that every PC exposes the feature.

Prepare a controlled test

Save configuration, media references and current versions before the test. Obtain approval from the venue's responsible staff and follow electrical safety procedures. Do not interrupt equipment that requires a controlled cooldown or whose manufacturer prohibits abrupt power removal. Use suitable test equipment or a bench arrangement when a live outage simulation would be inappropriate.

Perform a normal shutdown and restart baseline first. Microsoft's shutdown command documentation describes controlled operating system transitions; that baseline is different from an unexpected power cut. Keep both results so the team knows which failure path has actually been tested.

Observe without issuing duplicate show actions

• Record the initial equipment state and stop nonessential automatic actions.

• Simulate the approved interruption using the agreed safe method.

• Restore power and timestamp each recovery stage.

• Verify the actual controller address and device mappings.

• Check configuration loads before enabling commands to production endpoints.

• Run a harmless status check and confirm the operator interface reflects reality.

If the application runs an opening sequence at every launch, examine whether replay is safe after an outage midway through a presentation. Explicit state reconciliation may be necessary. Do not assume that restarting software restores the exact physical state of projectors, relays or media players.

Include delayed infrastructure

Repeat a bench test with the network or gateway becoming available later than the PC. Record whether the application reconnects, waits, reports a visible error or requires staff intervention. These are observed product behaviors, not capabilities that can be assumed for SoftControl or another controller.

Collect relevant Windows evidence through wevtutil if startup is abnormal. An unexpected shutdown event is evidence that the prior session ended improperly, not a diagnosis of the electrical cause. Retain application logs and configuration identity as well.

Accept recovery when the installation returns to its agreed safe and useful state within the defined interval, with remaining manual actions written for staff. Record any equipment excluded from the simulation and the reason. Keep a tested configuration backup and an onsite fallback with the opening and closing sequence. Requalify the chain after changing firmware, power distribution, Windows startup or controller hardware.