It's a N5010 DG15 discreet (ATI GPU) laptop and no power.

01. 3.3v and 5v available (TPS51125) - OK
02. +5V_ALW, +3.3V_ALW, +15V_ALW
03. 3V_5V_POK = 3.3v AC_PRESENT_EC=3.3v
04. KBC_PWRBTN_EC#= 3.3v to 0v (when pressed power button)
05. PM_PWRBTN#= 0v to 3.3v (when press power button)
06. PM_SLP_S4# , PM_SLP_S3# ,+5V_RUN , +3.3V_RUN , +1.5V_RUN = All these power lines power on and off (again and again looping)
07. No LED lights turn on.
08. No charging LED on but battery charging.

So far I have changed TPS51125 and EC NPCE781BAODX, flashes U6201 (4Mb BIOS). Nothing changed. What might be the problem....? Where to start?
Please help

detect termal or error pin to NPCE781

I have already checked them.
pin 99 = 3.3v
pin 96 = 3.3v
pin 106 = 0v to 3.5v, 2.4v (it changed 0v to 3.5v and again 0v. after few seconds again it shows 3.5 or 2.4 v)
pin 95 = 3.3v
pin 6 3.3v

I also checked U3901 (thermal controller) and Q3904 which is switching hardware pure shutdown. both works fine. THERMTRIP#= 0v and PURE_HW_SHUTDOWN#= 3.3v