Usually data can be lost or deleted from your PC, gadget or removable area due any number of various reason. Beyon hardware error or malfunction, the most common data loss reason include human error, disk formats, improper device handling. It can make any user fell frustrated as inaccesible data usually brings wastage of time and energy (user’s energy), often it brings loss in business reputation and/or downtime and wastage of money.
There are a lot of data recovery software over the internet, a simple search with any search engines. I’ve listed a few programs that are in the top list.