Method of visually signaling computer hardware faults on keyboard

摘要

A method for displaying reasons of computer hardware faults by light emitting diodes on a keyboard is disclosed. Some parts of the program of the basic input/output system (BIOS) are addressed to the light emitting diodes on a keyboard. Then the programmed numerical codes are outputted so that the basic input/output system performs a power on self-test (POST). By the illumination of the light emitting diodes and checking up a table, the fault condition can be known.