What can I do if my daughter wasted water on it?

Hi,

As you know water and electronics and electricity are not a good mix.

The water causes corrosion and provides circuit paths for the electricity which were not in the laptop's operating design and could damage the components.

First do not turn on your laptop and then you need to remove the battery as soon as possible from the laptop to minimize further damage.''

Then you need to dis-assemble the rest of the laptop and clean all the affected parts using Isopropyl Alcohol 90%+ to remove all traces of corrosion and water. Do not use "rubbing alcohol" as in some cases this is only 70% and is not as effective. If you do check the label to verify the amount

Here is a link that in general, describes the process.

Electronics Water Damage

As always with electronics, especially surface mounted PCBs be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board.

Here is a link to the Ifixit guide on how to dis-assemble your laptop.

Toshiba Satellite C650D

Hopefully after you have done all this the laptop might possibly work correctly again.

If this process seems too daunting, take your laptop to a reputable, professional computer repair service and ask for a quote for a repair. If you decide to do this, do it sooner than later.