Laptop won't detect Wi-Fi anymore?

So, my family recently moved house and have already got the Internet set up. The Internet is working fine on my iPad and iPhone but the laptop seems to have trouble. It use to be able to connect to other networks but no it isn't. Help?

It is a Windows 7 laptop btw

Added (1). Oh, it works with the Ethernet cable but I want to be able to take it to my room.

Added (2). Sorry, I have already done that about 2 days ago. Checking now… Yup, still on.

Look for the button that looks for Wi-Fi. You probably turned it off

I have a problem with asus notebook if you don't reboot the wireless gets disabled when coming out of standby.

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