OMEN HP Laptop +VCCGT problem

This OMEN HP Laptop is water damaged.

At first it had a short in +VIN rail due to mosfet PQ4007 being short-circuit.

After replace PQ4007, laptop start, and fans are spinning, but no lcd image.

It drains 1.2 amps from lab psu, and after 20 seconds, it drains only 0.6 amps.

+VCCGT voltage is present only half a second, but +VCC_CORE is present that 20 seconds.

I cleaned the motherboard with isopropyl alcohol, and there are no sings of corrosion.

Nothing is getting warmer, but i suspect PQ4007 killed the cpu.

NVVDD and NVVDDS voltage are present since power-on.

Can I make any crucial measurement to test the cpu?
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