Customize your browser’s default search engine.
These tips apply primarily to Windows 7
Source: PC World
   
Your PC builder has likely preset Internet Explorer’s default 
search engine to the one that’s paying it the most. Otherwise, 
it’ll be set to Microsoft’s liking: Bing. Change this setting 
by clicking the drop-down arrow in the top right corner of the 
IE window (within the search box), and click Find More Providers. 
You won’t find Google without a hunt, so type Google into the 
‘Find add-ons…’ search box, and select the first result, Google 
Search Suggestions. Click Add to Internet Explorer, and at the 
pop-up, click Make this my default search provider.