My computer became very slow, very time I click anything, it takes ages to get response. when I open internet explore, there are several web pages coming out apart from home page. most of the website are advertising, shopping and games web.
the operating system is Window XP home, and the internet connection is broadband, the kid at home downlaod some programmes and games from internet, more than 40GB space is used in the 80GB hard drive. I can not delete a icon on the desktop. How can I solve the problem?