it has happened again. all my bookmarks were deleted. what happened was my comp just rebooted itself and it showed this blue screen. then when i checked it again all my bookmarks were goone on my firefox. i tried to restore my computer to an earlier point, but it doesnt work. any suggestions. there were some important stuff in my bookmarks.

and the search bar on firefox does not work.

For the future you should backup your Bookmarks or Favorites regularly.

Try these ideas:

On Windows they are stored on:
/Application Data/Mozilla/firefox/Profiles/default.#*$!/bookmarks.html
It also has a backup on the same folder as bookmarks.bak

If you have a bookmarks.bak file, copy it, rename the copy to bookmarks.html and you're set. Don't do that while FF is running.
I have not had such an experience, but I am backing up my bookmarks file once in a while. Seems like a good idea.

What was the exact Blue Screen Error?

im not sure. i didnt read it. i should have though. the screen just turned blue. and i had to click the reset button.

from start / search do you find: bookmarks.bak

do i search for that under "all files and folders"

Yes also click More advanced options and check Search system folders and Search hidden files and folders and Search subfolders

yeah i do find bookmark.bak

If you have a bookmarks.bak file:

1. Copy it:

2. Rename the copy to: bookmarks.html and you're set.

Don't do that while FF is running.