Help with connection

I didn't know exactly where to post this. I am new to Mac as of about a month ago with a Macbook Pro. A couple of weeks ago I switched to a different cable company. I connected to the new network without any problems. After I woke up one day a few days ago my wife told me the electricity had gone out a short time that morning.

Now, when I turn on my macbook it says the preferred network is not found although it is listed. I deleted the old connection as well. All I have to do is click on my network in the list and it connects but it is very annoying. Anyone know what I can do?

Nevermind. After working with it for 3 hours trying different things I finally got it working properly