Virus trouble

I think I’ve got a virus and it’s p*****g me off, some help would be great

Every 10 mins I get an IE pop up box (whether it’s open or not) telling me the web page I’ve requested is unavailable offline and asking do I want to connect or work offline. I’m not asking it to connect to a page and this keeps happening every 10 mins, it’s driving me nuts.

I have the latest Norton and AVG and having run both they delete the trojan they find however it seems to have replicated itself and the whole problem happens again

help…please :frowning: