follow up on my repair, the APW8861 in my opinion is not compatible with G5388K11U, bought 2 original APW8861 and place it in the board, no nothing no CPU fan spin, no output voltage, 19volts rail is present. I thought the IC is defective so I placed the other IC with same results, so I search the net, though its really difficult to find the IC, I was fortunate to locate an original IC G5388K11U from Indonesia., the moment I place it and turn on the laptop, CPU fan spins, all voltage are present including 1.2v output of this IC to power the DDR4 memory module, the laptop works fine. Hurray!!!😁😁😁...