My wireless stopped after a black out?

We recently just had an on and off black out due to the weather, and now my lap top won't connect to the internet. There are connections that it recognizes, but two of them are at the maximum signal - one is secured and the other is not. I cannot get into the secured, yet I don't know if it is the unsecured that was my original connection. I restarted my lap top, and instead of automatically connecting to the internet, it says "Error Connectingto Broadband Connection". How do I get my wireless connection back that is secured?