I sent my Toshiba laptop in for repair and when it came back it asked for a security code and since i am completely computer stupid i called comcast and they told me if i was having trouble to reset my computer, so not knowing what i was doing i did as they said. now i have my sign on as the router number instead of my name which was my security code and now it says with this that i don't have a secure setting. how do i fix this nightmare that i have caused/