Hi, please check for a folder on your Desktop called Old Firefox Profile if there is one then yes possibly. Also please check here for 2 Profile folders, the oldest dated would be what you are looking. *https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data If you find it : you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem. Never work with original files. *https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile *http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox For the future always : *https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles *https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer Please let us know if this solved your issue or if need further assistance.