Safefinder Smartbar is a parasite program that displays ads during your browsing session. This parasite program will also replace the homepage of your web browsers by Safefinder Search (http://search.safefinder.com). In this tutorial you will learn how to remove Safefinder Smartbar/Safefinder Search and re-install the desired homepage.
Malwarebytes' Anti-Malware is a cleaning program that can help removing malwares. After downloading and installing Malwarebytes, click the "Updates" tab and run "Search for updates". Then, launch a full scan and click "Show results" after the end of the scan. Check all detected items, then click "Remove Selected". Reboot the PC, if asked to.
AdwCleaner by Xplode
AdwCleaner is a software created specifically for cleaning adwares. Launch AdwCleaner and click on Remove. You will probably need to reboot the computer after the scan.
Clean your browser
Uninstall parasite extensions on your browser. On Firefox, open Tools > Add-ons > Extension tab. On Google Chrome open the menu at the top right corner and then Tools > Extensions.