Deleting A String From Firefox's about:config Page

If you are looking for a solution about deleting any string or values from Mozilla Firefox about:config Page, you are in the right place. Let me tell ya the procedure...

1. Close firefox (so not to mess it up even more).
2. Go into your profile page "%AppData%\Mozilla\Firefox\Profiles\xxxxxxxx.default\" the x's stand for a randomly generated code for every profile.
3. Open the file "prefs.js" in a text editor.
4. And just use the find tool and enter the title of the string. (not the whole title just a part if you want) and just erase that part.

more simply-
1. Click Start > Run and type %AppData%\Mozilla\Firefox\Profiles
2. Open the folder and find prefs.js
3. Open the file "prefs.js" in a text editor.
4. And just use the find tool and enter the title of the string. (not the whole title just a part if you want) and just erase that part.

(close Firefox before doing so....)

Thats it.