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Daniel, Mac Genius
Category: Mac
Satisfied Customers: 4770
Experience:  Apple certified on desktop and portable, help desk qualified. Have owned and used Macs since 1989.
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I just moved and one of my macs wont recoginize the wireless

Customer Question

I just moved and one of my macs won't recoginize the wireless network, while my new laptop will.
Submitted: 6 years ago.
Category: Mac
Expert:  Daniel replied 6 years ago.
Hello, my name is Dan.
I will do my best to help you, the only stupid question is the unasked one.
It may be that a new location will help.

New Location 10.5-10.6

Give that a shot and let me know.

Customer: replied 6 years ago.
that did not work
Expert:  Daniel replied 6 years ago.
That is unusual that it did not work. You are trying to use the same wireless network and the same password?
In that case open the home folder/Library/Preferences and drag these files out to the desk top.
Logout and back in and now you will need to connect to the network because the plists will no longer be there.
You should now be able to log on to the network.
Customer: replied 6 years ago.
No that did not work either. Preference folder is on the desktop; there is no security/password XXXXX the network; my G5 is running 10.4.11 with Airport Extreme (not connecting); macbook pro is running 10.6.7 (connecting). Machines are sitting next to each other. I am using the same Comcast modem and Linksys router from previous location (for past 5 years).
Expert:  Daniel replied 6 years ago.
Why is the preference folder on the desktop? That is not where it belongs and moving things around that you do not know will finally mess the Mac up enough to require a whole new operating system.
I suggest puting things back where they came from and trying that new location again.
Customer: replied 6 years ago.
You told me to drag the preferences folder to the desktop. (see your answer above). I will try locations again and get back to you.
Expert:  Daniel replied 6 years ago.
I did not, please read very carefully and look at the image that shows where those file are.
Sorry, I didn't include the image.
Customer: replied 6 years ago.
tried to login after moving those three files to the desktop and a window came up that said "there is a problem with joining the network"
Expert:  Daniel replied 6 years ago.
Expected, Make sure Airport is turned on and select your network. Then login to the network.
Customer: replied 6 years ago.
it is on. all it says is "there is an error joining the network "linksys"
Expert:  Daniel replied 6 years ago.
Try putting this one back and then select Linksys from the Airport drop down menu.
If that fails then open system preferences/network and go that route.
Customer: replied 6 years ago.
I put that file back. no change. Linksys never comes up in the drop down menu. My only choices are "Other" and "Create a Network."
Expert:  Daniel replied 6 years ago.
Restart and do a pram reset.
To do a PRAM reset, you need to restart your machine and hold down these 4 keys.
‘Option’, ‘Command (Cloverleaf or Apple)’, ‘R’ and 'P'.
Keep them down until you hear 4 startup chimes, this is the sound that your computer makes when it starts up, it is like a boonngg. The screen should also cycle from white to black and then back to white along with the chimes.

If you have a wireless keyboard then the procedure is a little bit different.
Use the very same keys but wait until the first chime and immediately press and hold those keys. I recommend getting your fingers ready because timing is critical.

This resets all of the system buses on your computer, USB, FireWire, display, ethernet and your keyboard/mouse/trackpad.
This will correct many faults but not necessarily yours.
Try that.
Customer: replied 6 years ago.
That did not work either. Tried new location again, but that was unsuccessful as well.
Expert:  Daniel replied 6 years ago.
Ok, so the new Mac does, what is different in the network settings? That you can see.
Same wireless SSID and password?
The new one is running 10.6.7 and the other is 10.4.11, correct?
Both are wireless?
Open System Preferences/Network on the 10.4 Mac and turn off IPv6 it probably says Automatic now.
Also make sure that the networks in the list start with Airport, uncheck all others if you do not use them.
See what happens now.