Google as your default search engine in IE. Copy everything in the box below into NOTEPAD CODE REGEDIT4 [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" 1. Save the file as Google.reg 2. Double click to import to your registry.

Open your web browser, Internet Explorer or Mozilla
Go to Tools on far right
Click on "internet options"
on the opening page click the GENERAL tab
click in the blank box or if there is something in the box type over is with http://google.com
click Apply button if available
Click OK button.
close your browser
Next time you open it, it should open to the GOOLGE page.

Go to settings --> Search -->
there from the dropdown box, choose "google" or other, whichever you want, as the default search engine..

OR

in the extensions, uninstall the DELTA search tool bar, if accidentally it was installed.

If you are using the address bar to search, you should use a browser such as Google Chrome. Internet explorer does not have the capability to do this as quick. Try upgrading to a newer IE to be able to do this

From Internet Explorer
First open google.com on your internet browser then go to "Tools" at the menu of your Internet Browser. Here you will see "Internet Options". Click it, it will show you your current home page URL written down. Choose "use current" from the options and click on apply.
Google Chrome
Click the Tools menu in the browser. Select Options. Click the Basics tab. Select Google from the 'Default search' drop-down menu. Click the Close button.
from registry
Run regedit from your run menu and find this key :
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
and find Search Page value and change it to google like this :
"Search Page"="http://www.google.com" "Search Bar"="http://www.google.com/ie"
Hope it helps if so do rate the solution

Set the default search provider to Google when you see the message. I then suggest you update all security programs and then run all your security scans in Safe Mode. You are more than likely infected with something.