Firefox will not load. There are no error messages.

Firefox was working fine. Then the next time I turned on the computer to use it the program would not load. You click on the icon, which in pinned to the bottom toolbar, and it will show it has been clicked then never load. I have tried to use Program manager but can not even get program manager to work. I did find the program profile and renamed it, uninstalled Firefox and reinstalled and it still would not load. I also moved the profile to a different location. This did not work. I do not have a recent enough restore point to go back to when it was working. After uninstalling I also restarted the computer prior to reinstalling the software.
I would prefer to use Firefox as my browser but have no idea what else to do. I am on a PC and use windows 7 ultimate.

Do a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.
*Download the full Firefox installer and save the file to the desktop<br>https://www.mozilla.org/en-US/firefox/all.html
If possible uninstall your current Firefox version to cleanup the Windows registry and settings in security software.
*Do NOT remove "personal data" when you uninstall your current Firefox version, because this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
*(32 bit Windows) "C:\Program Files\Mozilla Firefox\"
*(64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"
*It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
*http://kb.mozillazine.org/Uninstalling_Firefox
Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure NOT to remove personal data when you uninstall Firefox as that will remove all Firefox profile folders and you lose your personal data.
If you keep having problems then also create a new profile.
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Profile_backup
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

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