want to delete current firefox and install completely new

You can reset your master password: *[[Reset your Master Password if you've forgotten it]] You can reset Firefox: *[[Reset Firefox preferences to troubleshoot and fix problems]] But if you still want uninstall and reinstall: *[[Uninstall Firefox from your computer]] *[https://www.mozilla.org/firefox/all/]

You can create a new profile if your current profile is causing problems. See "Creating a profile": *https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles *http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems. *http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox ---- You can use this button to go to the current Firefox profile folder: *Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder) *http://kb.mozillazine.org/Profile_folder_-_Firefox