Laptop will not go wireless nor will it install...

Question

My computer always says that I have to many security features install. So when I go to check to see if I can delete some infromation it tell me that I don't have a antivirus sofetware, but when I try to install the antivirus it says that I already have a program install. It went swireless for about 2 weeks and then stopped. HELP, PLEASE!!!!!!!!!