Recently microsoft essentials started detected several potential threats on my computer and although I click clean computer, they soon reappear. I also have noticed that my computer freezes alot. It is worse after I finally get it going and leave it for a minute then come back to it. If I reboot it, it takes a very long time for it to allow me to get online if at all. If I click something, it just stops the computer and I have to wait for it to finally load something or reboot again. Eventually it will allow me to get online, but it usually takes forever. I am sure my kids have downloaded something without knowing it, but where do I start with fixing it? Please keep the suggestions very simple or spell them out because I dont speak nerd. Thanks