What is this?

System Infected: ZeroAccess Rootkit Activity 2

 

I got a message saying it was a high risk and blocked. Did a search and it was a very high risk rootkit?

 

Also, everytime I click on a link, I am re-directed to something random. E.g I search Symantec and click on first link, I get some random page giving me antivirus offers.

 

I believe that is an effect of it, I am doing a full system scan as I am typing.

 

Please tell me how to get rid of it and if you can thanks.