We never got complaints from end users, complaining that
the system boot‐up didn’t run successfully; for example, the
power LED had become white colour, but no display; the
phenomena looked pretty like the case that power sequence
execution doesn’t go through successfully. Following some
experiments and debugging aftermath in the lab, we in the
end finding the extreme low ambient temp was the culprit
behind this issue; the extreme low ambient temp was already
below the system low operation temp specs.
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INC, HP, "TEMP SMART BOOT", Technical Disclosure Commons, (November 28, 2021)