So, literally, none of the programs are actually loading up at all? Which browsers have you tried and do you get any error messages?
Not knowing better, I would think your machine is infected. If you're running as admin, I really don't know what to do. If you're normally logged in as a regular user, though, you might well be able to get to the internet using your admin account and it might still be possible to save your system (download a decent set of anti-malware software to clean out your system and see if that helps).