Anywhere between 3-5 popups have appeared on the right side of the screen essentially telling me of trojan detected, steps to protect my data, to remove viruses etc. and that my McAfee license has expired. Since I have not had McAfee for several years and the addresses to click on look suspicious to say the least I am not about to click. BUT There are boxes to dismiss & an X to remove in upper right corner. Clicking them removes the warnings for about 30 seconds & then they are back. What can I do to get rid of these? Obviously I'm not the most computer literate person around & am stumped.