Please help urgently

My friend is really worried she has got a really bad virus or something, she has had this popup (or ones very similar), 5 times in an hour, and 1st time she clicked the "enable protection" button. When it came up second time she rang me, and i told her not to click it... but i dont know if anything has happened already, iv done some research but it all seems a bit vague, can some1 please advise me on what to tell her to do next? She starts University on monday, and needs the laptop for that, so if anything needs fixing it needs doing soon really Thanks

 

Sounds like your friend needs to find some virus protection which may take care of the problem. i recommend AVG. you can find that here.
http://www.download.com/AVG-Anti-Vi...239_4-10320142.html?tag=mncol&cdlPid=10880275
i hope this helps