In modern laptop, desktop PC, BIOS play an important role before operating system and
driver manage the platform hardware. CPU run BIOS code to initialize HW component. When HW
component malfunction, BIOS might not be capable to recovery itself nor re‐configure the platform
to a simple/safe state. This disclosure shows a method to use embedded controller to turn off
malfunction hardware component so CPU can run BIOS POST procedure successfully in next CPU
reset. This disclosure also provides a new POST strategy to bypass initialize device which failed to
initialize in last boot.
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INC, HP, "EC RECOVERY BIOS POWER-ON-SELF-TEST HANG", Technical Disclosure Commons, (December 19, 2021)