What does the LED on the HP server motherboard mean?

Let's roughly judge the faulty module first. There are four indicator lights on the front panel. Better have a photo. It is not good to look at the motherboard. The indicator light of the motherboard is printed with instructions on the inside of the upper cover of the machine. Generally, the motherboard is less bad, and the VRM or PPM module of CPU is much worse. See if the internal health light is red, that is, a box with wavy lines inside.