Data corruption is very common these days which is why we have recovery software like Cockroaches over the web, many of them are free while many ask for money to get your files back. If you have also came across such a situation and looking for a complete software (but for free) then here you can MiniTool Power Data Recovery is practically an all in one free (for home user) data recovery software.
Power Data Recovery can recover files from Windows Recycle Bin and restore lost data from formatted or deleted disk partition or you can also try it over optical media such as CDs/DVDs using one of its five modules of recovery options – Undelete Recovery, Damaged Partition Recovery, Lost Partition Recovery, Digital Media Recovery and CD & DVD Recovery.
This also has a very easy user interface; to get started you need to select the one of the module mentioned above and there you will get the recovery wizard associated with that module. About the time that it takes to recover your data: it depends on the degree of the damage done to the selected partition plus the number and size of files to be recovered.
Give it a try click here