Unplug the power plug immediately after something happens, even if it doesn't crash now! Then open the chassis and remove all the components to dry, especially the CPU, memory and other components. Finally, deal with the motherboard and blow dry the motherboard and other hardware evenly with a hair dryer.
Finally, I worked for a day, and after a day, I installed the test.
Generally, the motherboard is the most vulnerable to damage, and other hardware is less likely to be damaged.
Special attention: Do not thoroughly clean the hard disk with water to prevent water from entering the hard disk and damaging the disk and magnetic head!
I have tested this with water, and XP was being installed when water was introduced. Then it crashed for no reason. Then only the motherboard is damaged, and nothing else is wrong.