Do reformating also the computer solve this problem?
yes
some file infector info here from Mekiemoes Director of Research @ Malwarebytes
http://miekiemoes.blogspot.no/2009/02/virut-and-other-file-infectors-throwing.htmlIn anyway, that's how I see it. Imho, dealing with such infections is a waste of time and that's why I prefer the fastest and safest solution - which is a format and reinstall.
so it is up to you if you want Essexboy to help you....or use the other solution.