Unplug all power adapters and remove the internal lithium battery from the system board.
ASUS, Acer, and occasionally generic OEM builds (EXO).
An SOIC8 SOP8 test clip (for in-circuit programming) or a hot-air rework station (for chip desoldering)
[Power Applied] ──> [Fans Spin / LEDs Light] ──> [Black Screen / No Display] ──> [No POST Diagnostic Beeps]
The refers to a critical firmware file required for the maintenance and repair of specific OEM motherboards, most notably those found in ASUS X551 series laptops and certain Acer Aspire P3 digitizer logic boards.