Firefox *$&*!!!!!!

I updated Firefox the other day, and it completely broke my machine. Not only can I not access the web with Firefox, I can't use Opera, either. And I couldn't even get Chrome to install as a third alternative. IE still works, but as we know, IE is hosed. WTF? It can't be my firewall, because even when it is completely disabled, Firefox and Opera don't work. Everything worked perfectly fine before this stupid update, I've followed all the suggested fixes, uninstalled/reinstall Firefox, uninstalled/reinstalled Opera, turned off and on all my security settings in various configurations, and nothing works. Do you know how hard it is going to be to get someone to fix this in Delhi? Goddamn you, Firefox.