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

Record the boot configuration

Use the motherboard model and revision, not just the PC case brand, to select firmware documentation. Record POST indicators and recently changed memory, graphics or storage before returning settings to a documented baseline. One possible explanation is that a stored configuration value is invalid and prevents consistent initialisation.

Preserve recovery options

Firmware updates require the exact motherboard model and stable power. A blanket reset can remove boot, fan, RAID or security settings that must be preserved.

Firmware and hardware checks

1. Reduce to known hardware, inspect POST indications and compare saved settings with board documentation.
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 start, restart, memory training, storage, expansion cards and saved settings.

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