I hope you have managed to dry somehow the water from your laptop, haven't you? I would like to know if the laptop is still under warranty. If is that so, my advice is to bring it to a technician, but I really doubt that the repair company would validate the warranty, because in most cases the liquids are not covered by the warranty.
If the laptop is out of warranty, I suggest you to take out the HDD and to connect it to another PC as an external drive. There you could extract all of the data stored on the HDD, because in a case of failure of the laptop's motherboard, you will need to replace it and to reinstall the OS once again.