Why does the page freeze up during web searches?

Please, tell me why does the whole page lock up when I try to perform a search? It goes to the results page and then I can do nothing- not even close it out beside ctr+alt+del and clicking on end process. I have not been able to look anything up for 2 days. I can however click on links on the home page or on websites in my favorites and navigate away from the page that way. But, I cannot get to look up party supplies which I need a rush order on...if you have the link to birthday express that would be helpful.