Remove Browser Hijacker 'Isearch.omiga-plus.com' from IE, Firefox, Chrome Manually

Isearch.omiga-plus.com is a questionable search engine, which may show up on your browser one day. Typically, users agree to replace their default search engine or start page when they download freeware on their computers without checking its installation process.
http://www.removalvideos.com/
http://www.removalvideos.com/remove-isearch-omiga-plus-com-browser-hijacker/