IMac not connecting to wifi on startup/wakeup with only one preferred network

New (June 2012) imac. When it wakes from sleep/powers up, it searches for the only network that i have under preferred - can't find it. I open network prefs. Occasionally there is also a connection timout in there.... It says the computer has a self assigned IP. I turn Wifi off. On again. It (usually) connects.
I know a million other people have variations on this problem. But most of the recs involve clearing known networks. This computer has only ever connected to one and it's the only one on the list. ANy thoughts?
Recently upgraded to 10.8 but was having this issue with 10.7.4 out of the box.
Phones/laptops connect to same network with no issue.

Hi, this has worked for a few...
Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
10.7…
System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
10.5.x/10.6.x/10.7.x instructions...
System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
The interface that connects to the Internet should be dragged to the top of the list.
Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.
For 10.5/10.6, System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...
208.67.222.222
208.67.220.220
Click OK.
Also, turn off IPv6:
System Preferences » Network » AirPort » TCP/IP tab » Configure IPv6
Or whatever Interface you use.

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Macbook will not connect to wifi, an environmental issue with wifi?

Macbook running OSX 10.85 will not connect to wifi, Apple support thinks it could be an environmental issue. Am connected to wifi right now in recovery mode. Has this happened to anyone else? What did you do to correct the issue? Also, 2 iPhones and an iPad connect without issues.

Back up all data before making any changes.
Step 1
Take all the applicable steps in this support article. If you're running OS X 10.8.4 or later, run Wireless Diagnostics and take the remedial steps suggested in the summary that appears, if any. The program also generates a large file of information about your system, which would be used by Apple Engineering in case of a support incident. Don't post the contents here.
Step 2
Run Software Update and install all available updates for OS X or your computer's firmware.
Step 3
If you're not using a wireless keyboard or trackpad, disable Bluetooth by selecting Turn Bluetooth Off from the menu with the Bluetooth icon. If you don't have that menu, open the Bluetooth preference pane in System Preferences and check the box marked Show Bluetooth in menu bar. Test. Continue if you find that Wi-Fi is faster with Bluetooth disabled.
From that same menu, select Open Bluetooth Preferences. If the box labeled Discoverable is checked, uncheck it. Click the Advanced button, and in the sheet that opens, uncheck the top three boxes, if any are checked. Click OK. Enable Bluetooth and test again.
If the application called "Bluetooth Setup Assistant" is running, quit it. Note: this is not applicable to OS X 10.9 or later.
Step 4
This step will erase all your settings in the Network preference pane. Make a note of them before you begin, and recreate them afterwards. It may be helpful to take screenshots of the preference pane.
Triple-click the line below on this page to select it:
/Library/Preferences/SystemConfiguration
Right-click or control-click the highlighted line and select
Services ▹ Reveal
from the contextual menu.* A folder should open with an item named "SystemConfiguration" selected. Move the selected item to the Trash. You may be prompted for your administrator password.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination command-C. In the Finder, select
Go ▹ Go to Folder...
from the menu bar, paste into the box that opens (command-V). You won't see what you pasted because a line break is included. Press return.
Step 5
Reset the System Management Controller.
Step 6
Make a "Genius" appointment at an Apple Store, or go to another authorized service center.
Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional — ask if you need guidance.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
*An SSD doesn't need to be zeroed.

I have been unable make a FaceTime call with a 3G connection. I get s message " You are not connected to wifi.". Does FaceTime only work with wifi? It happened two different times, when calling a Mac laptop and an iPod which had wifi connections.

I have been unable to use FaceTime on my iPad2 when I only have a 3G connection. I get a message saying " You do are not
connected to wifi." Does it only work with wifi?

"I have been unable to use FaceTime on my iPad2 when I only have a 3G connection"
Correct.
"I get a message saying " You do are not connected to wifi." Does it only work with wifi?"
Yes.

Not able to connect to wifi using iPhone 4 with OS5, sees the network but won't connect.

Recently upgraded my iPhone 4 to the OS5 and I keep having sporadic issues with connecting to my home wifi, it sees the network but never connects. I turned of Location Services and Cellular Data for that had worked sometimes, but now it just keeps spining and never connects. I tried to reset network settings, reset my wifi router and reset my phone and nothing, it will connect at my church for example and other places but not at home. I have MAC addressing security set on my router and I verified my iPhone MAC address is authorized. Any other suggestions?

Try restarting your router first, turn it off for a minute then back on. then go to settings on your phone, then wifi, tap on the blue arrow to the right of your wifi 's name, then tap forget this network. Then go to the home screen, Then hold the home and off button down until the apple symbol comes up. Then go back into wifi and try to connect.

Itunes could not connect to the itunes store...only outside my network

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Also even at work, itunes crashed on average 3 or 4 times before it finally works.
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IMac cannot connect to WiFi at start up

Hi Guy,
I have a problem that really annoys me. I purchased an iMac only a couple of month ago, the model is 2.93GHZ, with 4GB ram, with ATI 4850 video card. At start everything works fine straight out of the box. After I update the OS X to 10.5.7, and all other updates, things start to go wrong.
The main issue is the wireless network. what happen is that it can not connect (or find) my wireless network. I have to switch the wireless (airport) off of my iMac, and then switch it back on for it to be able to connect to my router, then everything is fine. I don't have the problem of internet keep dropping off or stuff like that. Just that it won't connect to my wireless internet at start up and I have to switch the wireless of my iMac off and then switch it back on to be able to connect every time i start up my mac. About 8 out of 10 times, it won't connect. Very few times it will connect at start up. Any ideas guys?
Another question is the bluetooth. I am using a Logitech V470 bluetooth notebook laser mouse. It is the same thing, at start up, often it can not find the mouse. Sometimes i even had to plug in a usb mouse and manually set up the mouse connection again. So if any of you knows this problem, please give me a hand. Thanks a lot guys!

Welcome to the Apple Discussions, mate!
Make sure that there is only one choice for your Mac. Old networks that you setup and old preferred network passwords can confuse your Mac, especially if you migrated old user accounts when you originally setup this Mac.
The old networks can be found in System Preferences>Network>Air Port. Press the Advanced button. In the AirPort pane you will have to highlight each network listed and remove it by clicking the "-" button below.
Old preferred network passwords are in your Keychain. Go to Apps/Utilities/Keychain Access. If you sort the passwords by kind they should be labeled such as Airport Network Password.
When you designate a wireless network as preferred, the password is saved to the keychain. So if you make sure that your iMac only has only one preferred network from which to select, upon startup or waking, it should ignore all the other wifi networks drifting around your location and make a beeline to its one preferred choice.
Dah•veed

Iphone 4 is not connecting to wifi

iphone 4 is not connecting to wifi signals

What worked for me :
First reset the network settings on your iphone.
In Airport Utility go to the Wireless tab.
Change the radio mode to 802.11a/n-802.11b/g.
Change the radio Channel Selection to "manual".
Set the 5GHz to automatic and the 2.4GHz to 11

IMac does not connect to wifi on boot

I own an iMac and run it with OS X 10.7.5. Ever since system update 10.7.3 (February 2012) my mac more often than not does not connect to wifi on boot. I have to select diagnostics and connect manually. I did a design of experiment and have now discovered that I do not have this problem if I wait about a minute to log in after the login prompt displays. I like my mac for it's fast startup. It is a shame to have to wait unecessarily for it to connect to wifi before logging in. I kenw this was a problem with the system update and this confirms it. Does anyone know how to prevent this from happening so I don't have to wait?

It has been a month now and waiting a minute always works for connecting to my airport extreme on boot. I was cleaning behind my desk and realized that the ethernet cable was still attached to the back of the iMac even though I had moved the airport upstairs. I disconnected it. I also opened network preferences. The wifi was moved a long time ago to the top for priority, but the inactive ethernet and firewire were still listed. I removed both the ethernet and firewire so the only connection listed is wifi. My computer has now found the internet on 4 consecutive boots without waiting. It appears that having the other two options disrupts the connection process on boot. I will continue checking over the next week and let you know how it goes. Wish me luck!

My imac will not connect to wifi what so ever. i have tried 3 different routers and all my other apple devices work fine. when i take it to the genius bar it seems to work with apples instore wifi. thus leading the "geniuses" to say nothing is wrong.

my imac will not connect to wifi what so ever. i have tried 3 different routers and all my other apple devices work fine. when i take it to the genius bar it seems to work with apples instore wifi. thus leading the "geniuses" to say nothing is wrong.

Back up all data before making any changes.
Step 1
Take all the applicable steps in this support article.
Step 2
If you're running OS X 10.8.4 or later, run Wireless Diagnostics and take the remedial steps suggested in the summary that appears, if any. The program also generates a large file of information about your system, which would be used by Apple Engineering in case of a support incident. Don't post the contents here.
Step 3
If you're not using a wireless keyboard or trackpad, disable Bluetooth by selecting Turn Bluetooth Off from the menu with the Bluetooth icon. If you don't have that menu, open the Bluetooth preference pane in System Preferences and check the box marked Show Bluetooth in menu bar. Test. Continue if you find that Wi-Fi is faster with Bluetooth disabled.
From that same menu, select Open Bluetooth Preferences. If the box labeled Discoverable is checked, uncheck it. Click the Advanced button, and in the sheet that opens, uncheck the top three boxes, if any are checked. Click OK. Enable Bluetooth and test again.
If the application called "Bluetooth Setup Assistant" is running, quit it.
Step 4
This step will erase all your settings in the Network preference pane. Make a note of them before you begin, and recreate them afterwards. It may be helpful to take screenshots of the preference pane.
Triple-click the line below on this page to select it:
/Library/Preferences/SystemConfiguration
Right-click or control-click the highlighted line and select
Services ▹ Reveal
from the contextual menu.* A folder should open with an item named "SystemConfiguration" selected. Move the selected item to the Trash. You may be prompted for your administrator password.
*If you don't see the contextual menu item, copy the selected text to the Clipboard (command-C). In the Finder, select
Go ▹ Go to Folder...
from the menu bar, paste into the box that opens (command-V). You won't see what you pasted because a line break is included. Press return.
Step 5
Reset the System Management Controller.
Step 6
Make a "Genius" appointment at an Apple Store, or go to another authorized service center.
Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional — ask if you need guidance.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
*An SSD doesn't need to be zeroed.

Mac OS X will not connect to wifi, airport is broken, will connect to internet with ethernet cord. Is there an accessory I can buy to replace airport so I don't have to use ethernet cord? Please help!!

Mac OS X will not connect to wifi, airport is broken, will connect to internet with ethernet cord. Is there an accessory I can buy to replace airport so I don't have to use ethernet cord? Please help!!

Since the MacBook Pro currently works, you should put it next to the iMac and compare the network settings for AirPort in System Preferences Network pane Advanced. Also, if you want to start off with the default network settings, you can use Location drop down menu and select +Edit Locations+. Then click the plus sign to create a new location. Set up that new location.
On System Preferences Network pane, AirPort should appear at the top of the list (in the sidebar). To change the service order, click on the gear icon and select +Set Service Order+.
Some additional tests you can try, on top of seeing if it works with (1) WEP security disabled and (2) a direct wired connection to the router.
If you get it to work with either (1) or (2), be sure to run Software Update at least two times to apply any recent updates from Apple. See if that makes any difference to using AirPort with WEP back on.
(3) Start up in Safe Mode
http://support.apple.com/kb/HT1455
I don't know if any third-party software has been installed on the iMac at this point, but Safe Mode will start up with only the essential Apple extensions and processes running. See if it works any better in Safe Mode.
(4) Create a new admin user account in System Preferences Accounts pane
http://docs.info.apple.com/article.html?path=Mac/10.6/en/8235.html
Log out and log in to the new account. Try connecting with AirPort in the new account.
(5) Connect the MacBook Pro to the router with a wired Ethernet connection. Make sure its Internet access works. On System Preferences Sharing pane, set it up for +Internet Sharing+ so that it is set to +Share your connection from Ethernet - To computers using AirPort+. On the iMac, try to connect to that wireless network and access the Internet.
That last one (5) may be a good one to try first. It would at least show that the iMac's AirPort is working - you can even set it up to use WEP. If you have any questions about using the +Internal Sharing+ feature, please ask.

My ipod touch 5 is frozen on the lockscreen and i cant do anything except restart it and that doesnt hekp. will getting a new screen help? or is there another, less exspensive way? also, it is not connected to wifi.

I need to fix my ipod and i don't know how, i am hoping that if i leave it alone over night that it will fix itself,
its on the lock screen and i cant do anything with the screen, i tried restarting it and it didnt work, so because i restarted it, it is not connected to wifi.
please help.
will getting a new screen help? or is there an easier, less expensive way?

Try:
- iOS: Not responding or does not turn on
- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
- Try another cable
- Try on another computer
- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar

How can I use my Apple TV at a friends house ?? Is it not just a case of connecting to wifi then log on with my apple ID ?!

How can I use my Apple TV at a friends house ?? Is it not just a case of connecting to wifi then log on with my apple ID ?!

Thanks, I'll try it again. Was coming up on the screen saying something about cant work until the clock / time is configured or something ???

HT4623 I HAVE TRIED TO UPDATE SOFTWARE AND THE VERIFICATION SAYS I AM NOT CONNECTED TO WIFI BUT YET I AM SAFARI IS WORKING FINE

i ahve tried to update software on my ipad it states in verification that it is not connected to wifi,yet it is safari is working

Try a reset: hold down the home button along with the power button until you see the Apple, then let go. Try the update again.

I have lost my iPod touch however it was not connected to wifi network , how do i find it . A reply would be very appreciated

I have lost my iPod touch however it was not connected to wifi network , how do i find it . A reply would be very appreciated

you will have to use the old fashioned way, like if you lost a wallet or purse.
- Change the passwords for all accounts used on the iPod and report to police
- There is no way to prevent someone from restoring the iPod (it erases it) using it.
- Apple will do nothing without a court order
Reporting a lost or stolen Apple product
- iOS: How to find the serial number, IMEI, MEID, CDN, and ICCID number

I updated an iPod touch, an iPad 2, and an iPhone 4 to iOS 6, and all of them now will not connect to WiFi. They all give this wierd 404 error page from Apple and insist that I need to login to the network. Bad job testing the software Apple.

I updated an iPod touch, an iPad 2, and an iPhone 4 to iOS 6, and all of them now will not connect to WiFi. They all give this wierd 404 error page from Apple and insist that I need to login to the network. What's the fix? None of the recommended fixes work in any of these devices. Reset device, reset network, renew lease, etc. None of them work.

Does the iPod work OK?
Does it charge when connect to the computer?
Does it appear in My Computer?
Look at the dock connector on the iPod. Compare with the iPod that does work/connect.
I suspect you have a 2G iPod. Those can only go to iOS 4.2.1
http://support.apple.com/kb/HT1353#iPod_touch_late2009
iPod touch (3rd generation)
iPod touch (3rd generation) features a 3.5-inch (diagonal) widescreen multi-touch display and 32 GB or 64 GB flash drive. You can browse the web with Safari and watch YouTube videos with Wi-Fi. You can also search, preview, and buy songs from the iTunes Wi-Fi Music Store on iPod touch.
The iPod touch (3rd generation) can be distinguished from iPod touch (2nd generation) by looking at the back of the device. In the text below the engraving, look for the model number. iPod touch (2nd generation) is model A1288, and iPod touch (3rd generation) is model A1318.

IMac not connecting to wifi on startup/wakeup with only one preferred network

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