As soon as your drive has come in to any contact with water then
switch your computer off immediately (if it’s not already in that state)
and do not turn it back on. Powering up can lead to further problems
arising and can make recovering your data a harder task than it needs to
be. The sensitive heads of the drive may be stuck to the platters that
they usually hover above. By turning on the computer the disk will try
to spin round and tear the heads off in the processes, in turn damaging
your data completely.
You must then remove the drive from the case. Make sure you do this
safely by grounding yourself before making contact with the drive to
ensure that it receives no electric shocks. It is imperative that you do
not leave the hard drive out to dry or attempt to clean it. That advice
might seem unintuitive and silly, but drying out the drive will not
resolve the problem and can cause further complications. Even if
everything seems fine when you dry out the drive, further complications
could arise down the line. What you need to do is store the hard drive
in a sealed and air-tight container to keep it wet and stop any
corrosion. In doing this it will allow technicians at data recovery
companies to dry the platters professionally in a way that reduces
damage by using specialized methods and chemicals. You should get your
drive to a specialist company as quickly as possible because the longer
you wait the more likely the drive is to corrode. This means that there
a far greater chance of getting all your vital files back in one piece
than if you were to try and fix the problem yourself. Your insurance
company might cover you for the recovery cost, too.
Protecting yourself against water damage is something to be considered
as a lot of damage could be caused. Of course, you should be making
regular back-ups of your data to a different location (perhaps in the
cloud), but even doing things like having the computer on the first
floor can keep it out of a potential flood zone. This isn’t always
possible, so ensure that your computer case is properly sealed to guard
against minor water damage such as a spilt drink. In the scheme of
things these steps are minor compared to the stress of going through
data recovery.