There is CQ43-404SIA ( Chicago HR_HPC_MV_MB1), that no 3.3 and 5 volt.
3.3 and 5 volt produce for a moment when you plug in power jack, but goes off. I am suspicious on Pin 13 ( EN0- Master enable) that have 3.3 volt. on TPS51123 datasheet Pin 13 described as Master enable that when it is "open" channels are enable. What the means of "open"?

>What the means of "open"?
not connected (to gnd) / in air

e.g.

thank u. but why 3.3 and 5V produce for a moment then goes off?

It is really strange, after connect power jack then unplug it, resistance between gate and source of 3.3 and 5 V FETs goes to 0(1.5 ohm), seems something short, but after a while this resistance became normal. I am really confused. I think of some protection latch or something been active.

nobody help?

I am kn middle of strange story! I said before that when I plugged in AC 3.3 and 5 voltage produced then goes off, I realize that ENC(18th pin) when plugging AC goes to 2.6v( in range off Logical High means Enable for 3.3 and 5v) but after 1-2 seconds goes and stays on 0.7v(means Low in Logical state). I dont know why this happen. I am not sure from main+EC bios, if any body have please upload. I changed IT8518E but same.

too many questions...too little action )

TPS51123 new?
remove inductive coils in 3.3 / 5 V to turn off consumers

TPS51123 is new one, I removed coils before, so there is not any voltage even when plugging power jack. nothing produced. I just remove 3.3v coil so there is no 3.3 and 5 on start up and reverse happens!

Problem solved. Q1404 consumption side was short. By tossing voltage shorted capacitor found and replace. now laptop turns on but no display. I sinned on bios. any one have True Bios?