In order to completely remove this application from your computer, there are several things that you need to do. You can try to uninstall it using Revo Uninstaller and then try to use AdwCleaner to make sure that there are no leftover rogue registry keys or toolbars in your system. After this, go to your browser and reset all your settings to default and remove any extensions / add-ons that you don't use or don't know what they do. You can use Google to find a solution if you don't know how depending on the browser that you use. For the Internet Explorer you can open the browser, go to Tools -> Internet Options -> Advanced and click Reset, check Delete personal settings and click Reset again. Also, it is recommended to use Malwarebytes Anti-Malware to be sure that you don't have any trace of malware, worms, Trojans on your computer.