It can happen that a hard disk of a laptop, but also of a desktop, can no longer be read, often due to a software or system problem. 

Except for a physical problem that can lead to permanent loss of content, a software failure does not destroy your files stored in the hard drive. There are many ways to Data Recovery, but often the game is close and uncertain.

This is a very small box that just allows you to install a hard drive. It is the connection of this box that allows it to be connected to another computer by connecting to a USB port. 

It’s ultimately a kind of external hard drive. As there are different types of hard drives, there are different types of enclosures that can accommodate them.

You must use one that has the same operating system as the old computer. If it was running Windows, you must use a Windows computer. If Wikipedia it was a MacBook laptop, you have to take any computer running macOS. On the hard drive, there should be enough free space to store the files that are on the damaged one.