Bookmarks gone part II -- trying to add the troubleshooting option to this post

Some of my bookmarks are gone AGAIN. This time adding .old to files and deleting others did not fix the problem, nor has restarting firefox. I can see that sites have blue stars, indicating that they are saved into bookmarks (such as "weather") that I can no longer see in my bookmarks menu. Trying to recover bookmarks does not work. I can see recent dates of bookmarks. I can see old firefox data on my desktop. Bookmarks are a basic function of browsers. This is RIDICULOUS. Please fix this issue. I have not had ANY UPDATES to my computer since yesterday. Yesterday all my bookmarks were there!