There are two files on your old PC that could be useful. * places.sqlite - database file containing bookmarks and history * bookmarks-2013-02-20.json - latest dated bookmark backup file If you want all the history, you could track down the first file and drop it into your newly created settings folder. If you only want the bookmarks, you can "restore" the old .json file to your new PC. Both of these will wipe out any bookmarks you have added on the new PC. If you need to preserve those, there is a way. (To avoid doubling the length of this post, I'll spare you unless it's relevant.) For a recent discussion of how to track down the files and get them over, see this recent thread and related article: * [https://support.mozilla.org/en-US/questions/950827 restore bookmarks from vista] * [[Restore bookmarks from backup or move them to another computer]]