A system for backing up and restoring the functionalities of an information technology system which comprises an electronic computer, the electronic computer comprising elements for accessing the data communications network, a first hard disk, a removable slider which is adapted to contain the first hard disk, a first data bank; an operations center being adapted to retrieve instructions from the data bank which are adapted to be processed by the computer on the basis of a unique identifier associated with the electronic computer, the computer being further adapted to perform operations for backing up a restore point on elements for backing up data which are present on the first hard disk, on the basis of the instructions, and operations for restoring the data on the first hard disk on the basis of a choice made by a user.