The internet address links change after clicking them. How do i fix this problem?

After doing a seach at yahoo I select a web page to view and the address changes once its clicked. It takes me to random sites and won't let me go back. I have to shut off the internet explorer and open a new one. I have ran virus and addaware scans with no results. How do i fix my problem?

Thanks!The internet address links change after clicking them. How do i fix this problem?
Download and run SpyBot Search and Destroy, it sounds like you have some malware on your machine which is redirecting you.The internet address links change after clicking them. How do i fix this problem?
Looks like a virus in the system

dedicated server

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