Must be a laptop keyboard and water will go below most to settle on logic board must remove power immediately including battery to motherboard.keyboard is likely toast. Leave it disconnected for testing startup. Check ram and slots for black spots if arcing power AND clean gently with a sharp needle and the finest sandpaper is striker from book of matches.
Search youtube for instructional videos. Take pics for aid In reassembling.
After dry check ribbons and their connectors for black spots fried ends or bent copper connections from improper insertion inspect same connectors for black corrosion or worse. Complete disassemble and inspection required upon water damages.
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