First, have you tried restarting your computer?
To get your book marks back, if they havn't been deleted or gone missing, they should be here:
>>C:\Documents and Settings\%USER%\Application Data\Mozilla\Firefox\Profiles
There is only one folder in the directory. It has a random-ish name.
>>Look for: bookmarks.html
>>>Start up firefox, then do firefox:bookmarks>Import and Backup>From an HTML File
>>>>Browse over to C:\Documents and Settings\%USER%\Application Data\Mozilla\Firefox\Profiles\[random ish]\bookmarks.html
You can also give the backups a try if that doesn't work.
Human history is the story of complaisance. While disaster is fresh in our memory, we take precautions. But as the memory of disaster recedes, we start to take risks.