i just reinstalled windows and i want to recover my old profile or at least my old bookmarks
Did you back up the data on your computer before you re-installed? If you saved your Application Data Folder you can recover the data from there.
Do you mean register for Sync? Sync is not for backing up, but simply for syncing two or more devices with each other.
no i registered here with firefox i somehow got the impression that my profile when registered would be recoverable including bookmarks this is a total disaster
This is just a Support site, it doesn't do anything at all to recover your data.
Whenever you reinstall an operating system you need to make sure you take 150% precautions that your data is backed up, preferably in multiple locations. As I said Firefox Sync is not a backup service and was never meant to be one. For re-installing an operating system you should at least have a copy of all your files on an external hard drive, and perhaps a few other locations, such as a cloud backup service (carbonite, mozy, etc.). If you aren't sure how to do that you should have had a reputable local computer repair shop re-install Windows for you and asked them to save your data. Unfortunately there is nothing we can do since you didn't take these precautions to make sure your personal information was safe.
saved everything but my mozilla profile , including bookmarks simply because i thot it was automatic if i was registered . I got that idea from reading about people who had lost their firefox bookmarks on a help page like this . obviously i was misinformed i really only wish someone at mozilla actually cared
We do care, but caring won't get them back unfortunately. Believe me if you had saved the profile I'd be the first one helping you, but there is nothing we can do. This is just a support site, registering here isn't going to back anything up. Some people who have lost their bookmarks before come here and we help them find them, but that's because they have a backup on their computer.
Did you save the Application data folder in your user in windows? The Firefox folder lives there
turns out i did back up my bookmarks about a month before the crash . unfortunately i did it with firefox and now the file cannot be opened even with special programs designed to open those exact type file extensions (.json to be exact ) to to try chrome , much as i hate to i guess
Have you tried using Firefox to open the json? Restore bookmarks from backup or move them to another computer