No Google = Security Issue
Success with connectivity issues should leave you ready to begin browsing again – however if Google is the only search engine that won’t load, it is likely that the answer is that you have some form of security issue. Often Trojans and other malicious software can hijack your browser, making it pretty useless.
If you’re unable to open Google on your primary browser, try using an alternative – if you’re already using Firefox, try the same website with Internet Explorer. Alternatively, visit www.opera.com and try their browser.
The chances are however that you’re using Internet Explorer. An up-to-date copy will have some security features included that you will be able to employ to effectively “reset" the browser. Wtih Internet Explorer 7 and later, this can be done as follows:
In Internet Explorer, go to Tools > Internet Options > Advanced tab.
Click Reset... under Internet Explorer settings; the next screen will have the same option, click this also.
It can take a few minutes for this to complete, but when Internet Explorer finishes resetting, click Close in the dialog box, and restart Internet Explorer. You should find that Google can now be used.