The link will return you to the defaults if that is what you want. Easier to uninstall firefox and reinstall. But, for the bookmarke, if you find it as easy to reinstate manually, then no problem. But you can go to Users - username - Appdata - Romaing - Mozilla - Firefox - Profiles - . There you will find the "***.default". There exists there, a file with the name "bookmarks.html". You will also see a further sub folder there "bookimarks backups". This contains you existing list(s) You may only have the one, which is the transferred. But it is easy to browse and see which is the list you require.. I would then suggest, having found the one you want, you save it to a safe place. Reinstall firefox (or return to the defaults, as...