Hi, most of the problems I have experienced with harddisk is when its incapable of inner disk revolving due to power failure. Most of the times my clients who have experinced this problem is due to carelessness. If you have experienced this problem do Contact a Data Recovery Company like The East African Data Handlers here in Kenya.
The following are the common causes of harddisk failure:
Power Surges from Lightning Strikes
It is important to always power down and unplug your external hard drive during a lightning storm. A power surge from lightning strikes can cause external hard drive failure by overheating the hard drive.
Twisted Electrical Cords and Cables
Many times, twisted cords and cables can cause an external hard drive to be pulled off a surface onto the floor. It is always important to make sure cords and cables are not twisted and are a sufficient length to reach from the computer to an electrical outlet.
Using the Wrong Power Cord
If you have several different power cords in the vicinity of your external hard drive, it is important to make sure you are using the correct power cord with your hard drive. There have been many instances where a user has plugged a different power cord into their external hard drive causing a power surge which will overheat the hard drive.
Accidentally Dropped the External Hard Drive
There have been many cases where the external drive has been accidentally dropped by the user. Many of these hard drives are designed to sit upright on a flat surface. This can cause the drive to be susceptible to tipping over. The easiest way to prevent this from happening is to allow the external hard drive to lay flat instead of upright. This can prevent tipping. Otherwise, you should place the drive in a safe location away from the edges of a surface.
