How come when I search for a site EX: Costco another search engine now pops up.?

Question

How come when I search for a site EX: Costco another search engine now pops up.?

Answer 1

You have spyware on your computer. Its malicious software that embeds itself on your computer and tracks what you type. It then  makes relevant pop ups come on your pc which if you click will generate profits for ad companies. They can really mess up your pc so i suggest you get a good anti spyware like spydoctor or spysweeper. Not too expensive and if you know how to use torrents you can get it for free.