i would disable messenger in services like a few ppl have mention already using services.msc in the run box. that will for sure take away messenger pop ups. there r other popups that look like those but those r just regular pop ups. if u use ie, stop now and use firefox or some other browser that isnt ie. run adaware at least once again and spybot s+d once and then i would run both regulary like weekly. that should take care of almost all pop ups with firefox's built in blocker. if u get anymore especially with no browser window open then its a much deeper problem, i havent seen a unsolicited pop up on my pc for months.