Friend's MacBook Restored

My friend didn't remember installing and update or restoring his laptop, he just shut it off, then turned it back on, and it seemed everything was restored to when the previous owner had it, like the FireFox bookmarks and stuff. I managed to get his bookmarks back in the right spot, but his Bookmark Toolbar is cleared, and he had a lot of favorite sites and saved passwords that were cleared.




Any ideas?




Thanks.

He renamed his home folder.

Recover from renaming your Home folder