Pattern to record: Time and firmware settings reset after mains or main-battery power is removed.

Record the boot configuration

Record the laptop model, current firmware settings and whether the SSD is detected before changing boot options. Preserve any BitLocker recovery information so a firmware change does not turn a startup fault into a data-access problem. One possible explanation is that the low-power cell can no longer retain clock and setup data.

Preserve recovery options

Keep stable power and do not interrupt a firmware write. Some laptops use rechargeable or cabled cells that must not be substituted blindly.

Firmware and hardware checks

1. Record current settings, check hardware detection and compare a known recovery path before updating firmware.
2. Measure the cell and confirm settings persist with a known replacement.

Recovery and startup checks

If the checks support this cause, replace the correct cell and restore documented settings. Verification should cover cold boot, restart, storage detection, security state, sleep and Windows loading.

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