Windows Vista does not automatically connect to wireless

So I just got a new vista laptop and every time I shut down and restart I
have to manually connect to my wireless network. I have it set to
automatically connect and it looks like it's trying when it first boots up;
but than it doesn't connect. When I go to it, I can connect right away
manually; but I just don't understand why it won't connect on its own. Are
there any other settings I need to play around with? Thanks