My laptop won't connect to my Wi-Fi?

I have an Acer Aspire 7250 laptop. But 2 years ago, I had my hard drive changed to a Dell hard drive because the hard drive that came with it crashed. After I had it changed my Wi-Fi has been working all this time and now I'm on summer vacation at my moms house and I can't connect to her Wi-Fi. My iPhone connects and the other laptops and other iPhones in the house connects. But only my laptop won't connect.

How did you ask this question just kidding. Well rest your Wi-Fi or your laptop

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