Sounds like you have a browser redirect virus on your computer ... and they can be anything from annoying to dangerous.
You might want to read through some of these "fixes" to see if you can determine which virus it could be : https://www.google.com/webhp?sourcei...rect%20malware
I've used this site to help me remove a virus before, & it's usually pretty reliable: PC Hell: How to Remove Google Redirect Virus
... cp