Some of these toolbars and helpers are simpler to remove than others. Often they install global software that needs to be removed from the Windows control panel, rather than just from Firefox. (Sometimes the names are not obvious). * see [[Remove a toolbar that has taken over your Firefox search or home page]] ** the firefox reset feature mentioned in the above article may help,but it removes all your extensions, and personally I try to avoid using that. Once any rogue software is uninstalled the Firefox settings are likely to need sorting out. Luckily there is a restartless add-on available that is often able to handle that part of the problem. * https://addons.mozilla.org/firefox/addon/searchreset/ Post back with how you get on. Please give as much information as possible about what it is you installed, and what if anything you have found and removed.