Re: in my pc, what is the directory path to find bookmarks
In fact if the problem was not related to Firefox you could copy all or part of your wifes profile and thus have a system much like it used to be. If the problem
did relate to Firefox - just copy places.sqlite
was with History & bookmarks, - just use a working backup bookmark file from the backups folder within the profile (Firefox creates these automatically)
If the problem also related to Firefox not working and to answer your original question the file is places.sqlite. Note however that places, is a database including a lot of information. It includes history. It includes bookmarks and associated data such as descriptions, tags, keywords and how frequently or recently that site was accessed. The 'frecency is used in the awesomebar choices
Note as mentioned above that snapshot backup files of bookmarks are also created within the Firefox profile.
The default location of the profile in Windows 7 is *"%APPDATA%\Mozilla\"
The profile is easily accessed from a running Firefox, it is a bit more difficult to find otherwise. see
Even if you are using an external OS to search the old hdd you ought to be able to find the file without knowing the path, it will just take longer. Of course you need to be able to access the disk, but with any luck there will not be any other files on the system named places.sqlite. (If there were multiple users e.g. you and your wife then there will be multiple profiles, and therefore multiple files.)