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A professional data recovery service should be able to deal with the full panoply of reasons for system failures, such as human error, corrupted hard drives and server failures. The service should be able to cope with software problems afflicting the system, such as bugs in the program, virus or malware attacks, and even the malign attention of hackers.

Whatever the reason, it is essential for most clients to recover the data safely as soon as possible. Such data is often time or commercially sensitive. For this reason, all but the simplest problems will require a professional service; such professionals will make a swift diagnosis of the reason for the failure to help speed the data recovery process.

The easiest problem to fix is when an error in the computer operating system has caused the loss of data. In this case, a data recovery professional can swiftly gain access to the system and transfer the data to a replacement disk. Many problems can be quickly and easily solved in this way.

However, if the crash was down to a corrupted or otherwise malfunctioning hard drive, then the technician will have to decide on a more complex course of action, such as using special software to recover the information or by making repairs to the file directory.

In a worst case scenario, a data recovery professional may have to replace the entire hard disk – a tricky operation which involves several stages.

Firstly, the technician will need to examine the damaged disk with a microscope, to locate any physical fault. They will inspect the drive’s electrical components, along with its electronics, to see whether any of these are faulty and need to be replaced. Once any necessary repairs have been carried out, the hard disk itself will be reprogrammed and recalibrated.

The magnetic read/write heads on the disk, which allow information to be stored and accessed will undergo a similar diagnostic and repair process, with the focus on checking that the heads are properly aligned and clean. The cleaning process, along with any replacements or repairs, will take place in a ‘sterile’ lab environment. Only once the hard drive is completely repaired will the data be recovered.

This final stage of the data recovery process is crucial to success, so the technicians will work closely with the client, checking with them when necessary to confirm that the data recovered is correct. The information itself, once recovered, will be returned on a DVD or sometimes on a new hard disk.