Open registry editor by going to Start then Run and entering regedit and navigate to following three keys separately and change it as shown below:

[HKEY_CURRENT_ USER\Software\ Microsoft\ Internet Explorer\Main]
“Search Page”=” http://www.google. com”
“Search Bar”=” http://www.google. com/ie”

[HKEY_CURRENT_ USER\Software\ Microsoft\ Internet Explorer\SearchURL]
“”=” http://www.google. com/keyword/ %s”

[HKEY_LOCAL_ MACHINE\SOFTWARE \Microsoft\ Internet Explorer\Search]
“SearchAssistant” =” http://www.google.com/ie”