hello masters

i had a laptop with water damage in PU3 area
i heated the area and laptop turned on and works properly

when charger is pluged first D/C#=0V and next connect the battery ,it works good and charge the battery
when only battery is connected D/C#=3.3V but laptop tunes on and works
but when battery is connected first and next i plug the charger still D/C#=3.3 and there is short circuit

why P-CH mosfets wont switch?
where is the problem u think?

thanks all