Computer Virus help? PLEASE ANSWER!!?

This has been happening for 2 weeks now, when ever I search and click on a link it takes me to a shopping site and other useless sites I don't need. I looked up what that was and apparrently it a "malware virus" correct me if I'm wrong. I used Norton to scan and that was pretty useless as well, then I downloaded a free scan called Kaspersky, and that said I can't remove the virus with it. if neither of those worked... HOW DO I REMOVE THE VIRUS?!