What happens next?

How to remove trovi from internet explorer
Uninstall the trovi program using an uninstall program.
If you're using windows, go to the control panel and go to add/remove programs and find trovi and click remove. Sometimes this doesn't completely work and it reappears.
In that case, use a registry cleaner like ccleaner or regseeker which removes the files and any folders. Regseeker also has a search engine you can use to find remaining files and folders and delete them off the registry.