Thank you in advance for the help. I have an excel document that was fine on Friday when I was done working with it and then today has been reduced down to one tab, with the wrong data on it. I do not know if my computer shut down on it's own or my cat did something (ie sat on the keyboard). This is a csv file and I would really like to recover it. I was working on it last on 12/16 and I believe I saved it but when I opened it up this am there is one tab with the wrong data on it. I have no idea what happened. I have used the piriform recuva tool but am over my head as i don't quite understand it (have no idea if it's even the right tool) and don't know how to open up those files.
Thanks in advance. I have attached photos of the recuva tool and what it is showing. The last save which I believe was good was on 12/16 around 2 11 pm.