invalid syntax error

I have always been able to type in most anything ( dog, cat, airplane, etc.) into the address bar and get information on it. Not too long ago, I noticed that when I typed anything other than a web address, a search engine called Yoogee appeared offering different software and pages and such. It was a pathetic search engine and I had no idea where it came from. I did a little research and decided that it was spyware/adware. So I downloaded Adaware and cleaned things up. Now when I  type any subject other than a web address into the address bar, it gives me a blank page and  across the top of the monitor in the blue strip, it reads...Invalid syntax error--Microsoft Internet Explorer. What did the clean sweep with Adaware do? The Yoogee is gone, and I wanted that, but I figured some search engine would still be in use after I rid myself of Yoogee. I do not consider myself to be very computer literate. So, if you reply to this, please use language and step-by-step explanations that I can understand. Thank you.