HP Envy X360 LA-M021P - please repair this BIOS

[survivalbloke]

ENVY X360
15-ew0013dx
SN: CND2261KS3
Prod: 698V0UA
Board: LA-M021P Rev 1A
Chip# Winbond 25R128JVSN

Symptom: Power up to black screen, fans running hard

[3pka]

Did you traced rails? I think EC Firmware can protect CPU power rails when components damaged. This symptom usually happens when CPU had no powers. Only flash bios can't fix this.