Turn off your Chromebook and disconnect power cord. Keep it facing down (to help water/moisture get out). In addition, you can use a hair dryer to blow at the keyboard, while it faces down. But do not let the hair dryer get too close to the keyboard. For example, keep a distance of 4-6 inches. Typically, 10-15 min is sufficient. Then wait for another 10-15min. Plug back the power cord and turn it on. It should work fine. If not, repeat the procedure 2 - 3 times.