Google chrome
-. chrome menu (up right corner/ the three line image) ---> settings
-. on start up options ---> chose open a specific page... set pages
-. delete all the old search bar ---> add new page and type this http://www.google.com/webhp?source=search_app ---> OK
-. in search options chose manage search engine... ---> delete all old default search settings and other search settings ---> DONE
-. restart google browser
firefox
-. firefox menu (up right corner/ the three line image) ---> Options
-. in option menu chose (tab) General ---> chose restore to default
-. in option menu chose (tab) Search ---> under default search engine chose google ---> under one click search engine remove all search engine ---> OK
-. restart firefox browser