The laptop is completely dead after the liquid was spilled on it. There are no LED lights when you plug in the power adapter. Nothing happens when you press the power button. You let it dry for a few days but the laptop is still dead.
The motherboard was damaged.
Possible troubleshooting steps and repair solution:
Most likely the laptop doesn’t start because the liquid went down to the motherboard and damaged it. It’s very likely that some other internal parts were damaged too. It’s necessary to disassemble the laptop and take a closer look at the motherboard and other parts.