A co-worker normally helps us every time we are having problems with the network in our department. He is not really an IT specialist but he knows how to handle our problem until this time. He accidentally wiped out all and I mean ALL our files. Now, we are in big trouble! When he told me, I asked him to stop working because I'm afraid he might add more damage. We haven't backed up the files for the week and it's really bugging me. Is there still a way to recover our files? I need suggestions! What will I do?