backup an unusable HDD. I don't know what happened to my external, probably disconnecting it without having the computer off. But I have ruined it so hardcore that when I plug it in it says "windows must format (instert drive letter here), before it can use it." I have a LOT of important stuff on there, what software can I use to get files off it? I know they do it when you take it in to a shop, but they charge like 100 dollars to do so.