I recommend one good program that has helped me save my photos many times. This software is very useful if your memory card fails and you loose your images on card.
You can use this program to recover your photos. It really works and helps if you have accidentally deleted photos too.
This program is called Art Plus Digital Photo Recovery
You can download this helpful program from download link
I hope this recommendation was useful for you and you can recover lost images when bad things happens sometimes with memory cards!
Enjoy rest of the afternoon :)