Why can't my laptop find network connections?

My laptop is a gateway model W34oui and it was doing just fine til then, but when I went back on after I'd shutdown the laptop. The network connections seem not to be showing. I mean every time I refresh, it say window can't find network connection. It funny that my iPhone has the Wi-Fi connection also -.-.
And no I don't have ethernet cable. I use people connection. (Sorry that me)

Anyway Can anyone help?

Look for the Wi-Fi adapter switch somewhere. Read the friendly User's Manual. It exists for a reason.

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