If you know the name of the virus, we might be able to direct you to a site that has specific instructions. If you do not know, first check your list of downloaded applications in Windows Control Panel > Programs and Features and look for any suspicious applications - if you group by date the program might be easier to expose since malware tend to come bundled with other applications. Also check your extensions for anything suspicious by entering '''about:addons''' in the address bar, or: * Tools (or [[Image: New Fx Menu]]) > Add-ons > Extensions Most malware/viruses can also be removed by running some of the following: * [http://www.malwarebytes.org/products/malwarebytes_free/ MalwareBytes' Anti-Malware] * [http://general-changelog-team.fr/en/downloads/viewdownload/20-outils-de-xplode/2-adwcleaner AdwCleaner] (for more info, see this [http://www.bleepingcomputer.com/download/adwcleaner/ alternate AdwCleaner download page]) * [http://www.microsoft.com/security/scanner/default.aspx Microsoft Safety Scanner] * [http://www.surfright.nl/en/hitmanpro/ Hitman Pro] * [http://www.eset.com/us/online-scanner/ ESET Online Scanner] For Rootkits: * [http://support.kaspersky.com/viruses/disinfection/5350 Anti-Rootkit Utility - TDSSKiller] If those do not work, or there are still issues, I suggest getting more instructions in a forum specific to removing viruses and malware. Some modify core Windows files so additional steps are required. Try posting in one of these: * [http://www.bleepingcomputer.com/forums Bleeping Computer Forums] * [http://www.spywarewarrior.com/index.php Spyware Warrior Forums] * [http://www.spywareinfoforum.com/ SWI Forums] Further information can be found in the [[Troubleshoot Firefox issues caused by malware]] article.