W10
I have files of various formats (pdf, ppt, doc, etc) that won't open because they're "...unsupported file type or have been damaged". I don't know why they're damaged....they were all originally on other computers (which I don't have any more) so possibly in the process of backing up. I'm on W10 now but the original computers were W7 & some might've been from XP machines, I don't remember for sure (some of the files are nearly 20 years old).
I've tried free applications like Piriform's Recuva but had no success. So, what applications would people recommend, please?
Also, does it matter that they've been transferred from one PC to another....will that effect the chance of successfully recovering/repairing them?
Thanks