Windows 7 Alienware computer won't connect to Wi-Fi?

So my Alienware computer running windows 7 won't connect to Wi-Fi at another house I type in the password correct and it connects to everything else like my iPhone and ipad. What do I do?

At the other house, in the command box, type IPCONFIG and see if you have an IP address. It may say media disconnected
Go to the router and put a paperclip in the small opening to reset it.

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