Your system data (thank you for sharing) shows you have Classic Theme Restorer installed, so are your settings intact, the key thing missing is bookmarks and history? ---- There's no history backup, but Firefox does make routine bookmark backups. Could you check whether you have any available to restore. These usually appear on the Restore menu in the Library dialog. This article has the steps: [[Restore bookmarks from backup or move them to another computer]] Does that work? ---- If that doesn't work, or if history is really critical, you might need to try a corrupted database fix. Please make a backup of the database for safekeeping. Here's where I would expect to file it: Open your current Firefox settings (AKA Firefox profile) folder using either * "3-bar" menu button > "?" button > Troubleshooting Information * (menu bar) Help > Troubleshooting Information * type or paste about:support in the address bar and press Enter In the first table on the page, click the "Show Folder" button. This should launch a new window listing various files and folders in Windows Explorer. Scroll down and look for '''places.sqlite-corrupt''' and copy that to a convenient location (e.g., your Documents folder). To try to resuscitate that file, see: https://developer.mozilla.org/docs/Mozilla/Tech/Places/places.sqlite_Database_Troubleshooting (I haven't tried it myself.)

You can check in Windows Explorer if there is a previous version of the places.sqlite file available. *Right-click: Properties -> Previous Versions *http://windows.microsoft.com/en-US/windows7/Previous-versions-of-files-frequently-asked-questions