Board: HP ProBook 470 G5, X8C DA0X8CMB6E0 REV: E
Chip: GigaDevice GD25B127D(SIG), SOIC-8, 16MB, dumped via CH341A + flashrom
Symptom:
HP logo appears, then immediate reboot loop. After several power cycles, screen went permanently black (fan running, no display, no HDD spin). After full...