hello, this sounds like you did download firefox from a bogus site which bundles the browser with ad&malware. please only download firefox from the official location at mozilla! * go into the windows control panel/programs section, sort it by install-date and remove all entries that were installed around the time you added the presumably adware-bundled firefox. also have a look for other unwanted toolbars... * run a full scan of your system with different security tools like the [http://www.malwarebytes.org/products/malwarebytes_free free version of malwarebytes] & [http://www.bleepingcomputer.com/download/adwcleaner/ adwcleaner]. * go to getfirefox.com and download a fresh installer for firefox. after installation go to ''firefox > addons > extensions'' and see if there are any toolbars listed - if so, [[Reset Firefox – easily fix most problems|reset the browser]]. [[Remove a toolbar that has taken over your Firefox search or home page]] [[Troubleshoot Firefox issues caused by malware]]