User blog:Pencil-/3 Viruses! I Need Help!

Ok, here's what happened. I was playing Minecraft when all of a sudden, my computer popped up with saying I have three viruses, one is a trojan. I don't have virus protection on this computer either. I tried telling my mom but she doesn't really care about this; I have no clue what to do and was going to ask the wiki. Please help me!