mery pc mien pta nahi kya masla hae k hamesh task manager registry editing aur folder option disable ho jata hae

mien ney windows re install ki ,poori hard disk formay ki bad sector bi nahi hae magar jaisey hi windows reinstall krta hon hard disk format kr k, doobra virus aajata hae

mery pas avg 9 bi hae us sy bi scan kiya maga kuch nahi huwa plz help mien bohut pareshan hun plz help