My Mac air not connecting to wi fi

My Mac air will not connect to wifi. Router ok. Desk top and iPad all connect without difficulty. Air worl in other locations. Can I delete router and reboot. If so how?

It did briefly once, but now Airport just says "scanning" all the time. I'm plugged in via ethernet usually which continues to work fine. My wireless network is also visible and working fine to my 2 iMacs, iPhone and (non Apple) laptop. No error messages, just can't see the wireless network. The network has WEP security. I tried switching it off but that didn't make any difference.

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Reset PRAM. http://support.apple.com/kb/PH18761
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I have a Mac Mini Intel Core 2 Duo that I use with my TV. It has 2 GB of ram. And it's running 10.6.8,
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The network address is probably not shown but the subset mask should be the same as the the Air and the default gateway is probably labeled as router.
You say the Air is connected to WiFi which I presume is your router were as the Mini is connected to the airport.
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Could you help me.
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there is no one fix solution to wifi problems, your issue is nothing new please refer to this link
if you haven't read it ,
https://discussions.apple.com/message/24691862#24691862

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When you see an exclamation point in the Wi-Fi menu, first turn Wi-Fi off and back on. If it still fails to connect, then from the menu bar, select
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Reset PRAM. http://support.apple.com/kb/PH18761
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Best.

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Found the fix. Still don't know if it was Windows, iTunes, or Norton 360, but this worked immediately for me:
+++++++++++++++++
edgravel
Re: iTunes Store Won't Load, Won't Show Error Message
Aug 13, 2011 4:32 PM (in response to Daedalme)
I found a solution posted from Rodfromnework for PC users. It worked for me and easy to do.
Start --> Programs --> Accessories (Right Click on Command Prompt) --> Run as Administrator
then type in:
Netsh winsock reset
Hit enter, restart PC, open iTunes, go to Store
Hope it works for you too.

My Mac air not connecting to wi fi

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