I don’t know much about the technical side of computers and I don’t need to know much about that side. I know that they work and when everything goes like it is supposed to then there is no problem. Unfortunately, every once in a while I have a problem I can’t figure out and I need to get help. When my SD card wouldn’t open I asked a friend and she told me to get corrupted SD card recovery software. This software is easy to use and it is cheap. It allows you to recover your files.