Hard drives fail all the time. As they are intricate, mechanical devices, a lot can go wrong. Worn out parts can simply stop working as well as they should, dust or other particles too can have their effects on a hard disk drive, causing it to crash. They are quite sensitive, so dropping or banging a hard drive and power surges can damage or destroy the drive quite easily. If you have a crashed hard drive, the first step is to figure out the cause of the failure. In this way, a professional will be able to see if data recovery is a viable option.