When I type in yahoo then ctrl/enter it's changed

Ok, I used to be able to type in a site without www and .com and get the site. IE type yahoo then hold Ctrl and press the enter key and www.yahoo.com would come up.

Now it takes me to http://search.yahoo.com/search?p=yahoo&fr=ieas

or for holley it takes me to http://search.yahoo.com/search?p=holley&fr=ieas

It's always a yahoo search. What do I need to change to get this working again? Thx in advance.

Found it,
tools/internet options/content/auto complete and check box for web addresses.

I was going to suggest clearing history or reducing the number of days to keep pages. Don't know if this is relevant to your problem.