See this link http://www.kellys-korner-xp.com/xp_favorites.htm for a possible help.
Good luck,
IN TEARS - Suddenly, more than 1/2 My Favorites dissappeared. They were fine last night. I have/had major quantities of important information there, research, etc. I cannot hope to ever reconstruct it. I tried System Restore back one week. Nothing. I use My Favorites heavily, every day. Not only are whole folders missing, also individual sites disappeared that were yet unfiled. There were also some sites listed that I had deleted months ago. I Just Cannot loose all this information!!! What happened? What do I do? ASAP Thanks ginni ladytrickster

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic