Call a tech person
There are plenty of people around the globe who was only a usual user of computer, and they have known limited information on how to deal with various computer problems. So, when they had a problem about their computer, they shall call a tech person right away, because they knew that person shall solve their problem. Especially, when the usual computer user has a problem on how to recover its important files, calling a tech person is the smarter decision, because this kind of person is knowledgeable on how to do the hard drive recovery or data recovery.
If one usual computer used to do this, it has made the good decision ever. Because, that tech person, will do a lot of things just to recover all of the lose files by deleted, or in physical HDD damage, since doing the data recovery is a part of a job all tech person around the globe.