Why isnt my wireless name not showing in the wireless network connection list?

so i was using my laptop last night and i was annoyed with the internet acces so i disconnected my wirless name and thought, once i connect it again the internet will work, it turned out that it doesnt appear in the wirelss network connection list. everything is fine i tried turning it on, reset but nothing works. Right now im using a plug in to acces the internet but i want it back wireless.... cna anyone help :/ i hate being in one place