The device initially came with another problem. The power jack led used to turn off after 2 seconds when PSU attached. Reprogrammed BIOS and the device now turn on and off afer 2-3 seconds.
Noticed normal voltages on PU6 when on status

n10. 3.3V
n11. 3.3V
n14. 5,09V
n15. 5,09V
n16. 5,09V

but when off status

n10. 0V
n11. 0V
n14. 5,09V
n15. 5,09V
n16. 5,09V

Mistaking the CQ61 and CQ62 with values -->NTMFS4921 and NTMFS4946N.

Any help with finding substitution for these two fets.

First Check the start button, the button can be regard to the ground (or transaction has a circuit).

The power button circuit is ok. I checked. The laptop starts by the pwr button then shuts down after few seconds. The fets i indicated and need substitue for are desoldered and defective.