Pattern to record: Hardware is healthy yet POST behaviour changes after settings are reset.

Record the boot configuration

Workstations may have multiple memory channels, add-in storage controllers and protected array settings. Record the installed layout and diagnostic code; preserve RAID configuration when reducing the machine to a supported test configuration. One possible explanation is that a stored configuration value is invalid and prevents consistent initialisation.

Preserve recovery options

Do not initialise storage controllers or clear security data during basic POST diagnosis. A blanket reset can remove boot, fan, RAID or security settings that must be preserved.

Firmware and hardware checks

1. Use diagnostic codes and minimum supported configuration while preserving RAID and security settings.
2. Save required security and storage details, then test documented defaults.

Recovery and startup checks

If the checks support this cause, clear the affected settings and rebuild only necessary configuration. Verification should cover cold boot, all memory channels, storage controller state, expansion devices and sustained work.

For an assessment of your professional workstation, contact AEPC in Burswood or call 027 908 8880. Provide the model and the conditions that reproduce this problem. Workshop visits are by appointment.