I was working on my computer at work doing something on photoshop and closed it after I saved some changes and all of a sudden everything on my desktop had disappeared completely except for the two files I just saved in photoshop. I decide to restart my computer thinking that would fix the problem. It boots back up and asks me to sign into iCloud. This is very weird since this only happens the first time you set up a computer. I go through the motions and it finally boots up and everything is GONE. ALL of my files on the whole computer are gone. Totally wiped out. My user preferences are totally reset. Icon size, finder window layout, mouse tracking speed, etc. The only thing that remains is all of the applications I had previously installed. All the apps are there, NOTHING else is. It's like a completely fresh install of my computer in every way except that my apps are still there. I am freaking out. This happened out of nowhere. Completely out of the blue after Photoshop closed. I first noticed that things had gone horribly wrong when my desktop was completely clean except for those two files I was working on in Photoshop. I searched for the folders thinking they were moved somewhere but couldn't find them anywhere. Please someone, I'm desperate. Help me, please.