Lenovo Y530 power(?) issues

[unimatrix93]

UPDATE

So I tested the MOSFETs and I found something fishy on the +5VALW circuit.

There are 3 MOSFET on this line named QV11, QV29 and QV12:

QV11 - LBSS139WT1G - N-Channel
QV29 - AO3402_SOT-23-3 - N-Channel
QV12 - AO3402_SOT-23-3 - N-Channel

I tested these MOSFETs by setting my MM in diode mode and I measured S (red probe) to D (black probe) then reversing the probes.

First valuer is Red on S Black on D second is reversed.
QV29: 0.010V / 0.010V
QV12: 0.273V / 0.510V
QV11: 0.518V / OL

QV29 and 12 looks faulty since shouldn't it read openloop on reversed polarity like on QV11?

I attached a photo of the parts and the circuit.


I really hope I'm on the right track finally.

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