4. What happened when the drive failed?

5. How fast do you need the data?

Recovering critical data is a specialized process that requires the right software, hardware and advanced techniques. In many failure-related cases, the chances of recovering data from a damaged hard drive range from 90-100%. If the electronic system is the only thing affected, then the drive can often be reused after the electronic control panel has been replaced. If, on the other hand, the defect is of a mechanical nature, then recovery will be a bit more difficult, which can be taken care at any specialized data recovery services companies lab.

If it is problem related to the file system, which has caused inaccessibility of the data then it can be recovered using data recovery software, an independent review has been posted on my website which lists the best in the field and helps you to identify the correct solution.

The review report is available on this link http://www.protostech.info/windows-data-recovery-review.htm.