Today computers are used much more thoroughly then a decade back. We are almost trying to expel paper from our lives. Majority of work is being done by computers, and these are more prone to failure. These failures invariably lead to data loss.There are numerous contributing factors of data loss. The five main reasons are as follows: -1. The first and one of the most common reasons of data loss is hardware failure. When powering on your computer you might abruptly hear clicking, buzzing, scrapping and ratting sounds. These are the noises that come when the motor, electronic boards or magnetic platters get damaged due to any electric failure or a head crash. Alternately, the drive might also refuse to spin and results in inaccessible data.2. Another reason of data loss may be Firmware Corruption. Firmware is the software program that controls the operations and activities of hard drive like configuration, space management and safe power on/off. If firmware corruption occurs then system doesn’t detect the hard drive.In occurrence of such event, you system will be prevented from accessing data from hard drive.3. You might power on your system and find that files, folders and drive partitions are missing. This is the logical error. These may evident as erroneous, incomplete or nil data in files.Such problems are the effect of malicious work of people who develop viruses that damage data. This makes the program operate in a wrong way. The computer compiles and interprets but makes an incorrect execution.4. Accidental deletion and overwriting is also a common reason of data loss that more often happens. This event occurs when you overwrite some existing data or emptied the recycle bin. This is the data loss event of human error category.5. Data loss may also occur due to Operating System failure. Operating system is system software that manages the hardware and enables its communication with software.The operating system corruption may results in cross linked files, lost clusters, file system corruption or invalid file directories. In this situation, strange error messages get generated or many files may get corrupted.These are the five common reasons of data loss. You should be aware of these things to avoid your valuable data from loss. If you have experienced data loss due to any of the reason, you need for data recovery to recover your valuable data. There are two options of data recovery you have- one is software method and second is hardware.If your data is lost due to the software problem like logical error, operating system corruption or accidental deletion, then you should use data recovery software to recover and restore your data.In case when your data is lost due to the hardware problem such as firmware corruption or hardware failure, then you should take help of data recovery services for recovering your data. Many companies provide this facility with its experienced professional data recovery engineers and data recovery labs.