This laptop brought in No power state. IO and LAN IC is very hot so KBC changed by new one( KB930QF-A1) and LAN IC removed and not replaced. Now by pressing power switch laptop turns ON. We have all Voltages on Voltage rails. But NO Display. and resumes only 0.5 Amperes ( with or without use of RAM consumption not changes). Anyone have any Idea?

It abnormal - may have been a lightning strike or some other powerful electrical pulse.
After need check southbridge (hub) - better - replace it.

FCH changed by new one but it is same/

MB rejected.