Software/App/Extension forcing itself onto into my laptop?

I have a Lenovo V570 Windows 7 Home Prem. I've been through the extensions, uninstalled unknown and unneeded software, adjusted Start-up programs through msconfig, customized the startup webpages for Google Chrome and this:
http://www.trovi.com/?ctid=CT3332563&searchsource=55&UM=6
is still opening as the startup webpage. I can't find it anywhere in the laptop to end/uninstall it.

What is the going on? What is the problem? What do I do?

Trovi is a PUP=Potentially Unwanted Program

Tools to use:
Junkware Removal Tool
AdwCleaner
Malwarebytes Anti-Malware
SUPERAntiSpyware

Instructions here
http://vmsar.wordpress.com/basic-malware-removal-guide-2/browser-hijackeradware-removal/

As you can see, trovi.com is an aggressive browser redirect virus. You have not completely removed all file and entry in your system and the registry. There are some hidden adware programs still left in your computer system. That's why you still have it in your PC. Check this thread to see people fixed it.