hello, this looks like a problem possibly caused by adware on your pc. please go to firefox > addons > extensions & remove any suspicious entries (toolbars, things that you have not installed intentionally, don't know what purpose they serve, etc). also go to the windows control panel / programs and remove all toolbars or potentially unwanted software from there. [[Remove a toolbar that has taken over your Firefox search or home page]] afterwards install the search reset addon - it will revert the most common customziations those adware programs do in firefox back to the default: https://addons.mozilla.org/firefox/addon/searchreset/ also, you don't need an addon to change the page that shows up on a new tab. to do this manually, enter '''about:config''' into the firefox location bar (confirm the info message in case it shows up), search for the preference named '''browser.newtab.url''' and double-click & change its value to '''www.google.com''' (or whatever site you want). & finally -this also needs your attention: please [https://www.mozilla.org/en-US/plugincheck/ update your plugins] (some of them are out-dated & have security vulnerabilities that are actively exploited on the web).