Imac not seeing wifi

My imac is not seeing my wifi.
my macbook is connecting to the wifi at the same place.

WiFi works best in a range of 10 feet (3.048 meters) to 150 feet from the transmitter.
WiFi works best if you use WPA2 encryption.  This is not possible if your Mac is the original Airport 802.11b, unless you attach a WiFi ethernet bridge router and connect to its LAN port.  It has to be Extreme to get at least 802.11g.  Starting late in 2006, patches were available to upgrade Macs to 802.11n, and by late 2007, all Macs had built-in 802.11n.  Obviously the slowest machine on the network will drag the speed of the entire network.  Microwave and 2.4 Ghz frequencies, and unshielded speakers can all affect the strength of the wireless signal.  Not all iMacs have builit-in airport.  To determine if yours does, identify it first using the first article below, and then read the following article to determine if Extreme was included:
http://docs.info.apple.com/article.html?artnum=301724
http://support.apple.com/kb/HT2256
All Intel iMacs have built-in Airport Extreme cards.  If you find it isn't working, and the above tips don't work, let us know which iMac you have, and we can tell you what step to take next.

Similar Messages

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    iphone 4 does not see wifi networks even though wifes phone right beside mine does
    what to do

    http://support.apple.com/kb/TS1398

  • Hi folks, you might know how to fix this: my wifi shows (no hardware installed) then I went to system preferences and deleted the wifi connection, I went also to system information and I can not see wifi listed on Network, how can I create a new wifi ?

    Hi folks, you might know how to fix this: my wifi shows (no hardware installed) then I went to system preferences and deleted the wifi connection, I went also to system information and I can not see wifi listed on Network, how can I create a new wifi or simply solve this, I have tryied shotdown pressing keys like P and R, option, etc. Please help me .

    Please read this whole message before doing anything.
    This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
    The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
    Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
    Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
    Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output on certain models. The next normal startup may also be somewhat slow.
    The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
    Test while in safe mode. Same problem?
    After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

  • TS1398 my ipone 4s does not see any wifi networks my ipad works ok tried all of the above resetting network etc still does not see wifi ?

    my ipone 4s does not see any wifi networks my ipad works ok tried all of the above resetting network etc still does not see wifi ?

    If no change after restoring the iPhone with iTunes as a new iPhone or not from the backup, the iPhone has a hardware problem with the wireless card or with something else.

  • Imac not seeing Time Capsule

    I just bought TC and tried setting it up. When I open airport utilities, it scans but cannot find the TC. I've tried alot and looked at all the posts. But none of the posts state that the utility cannot find the TC. Does anyone have any ideas? I am about to return it.

    Kevtul wrote:
    I just bought TC and tried setting it up. When I open airport utilities, it scans but cannot find the TC. I've tried alot and looked at all the posts. But none of the posts state that the utility cannot find the TC. Does anyone have any ideas? I am about to return it.
    Just got my 1 T today and had the same problem. My iMac core duo which I run my network on (it is hardwired to cable modem and I want to keep it that way) could not see the TC, but my macbook core duo 2 that is wirelessly connected to my iMac (which is my airport extreme station in house) could see it and I could start to configure but when I tried to set up it would not go past the configuration for password to join my existing local airport network.
    So went to do other tasks and came back, and realized when I looked in my iMac airport to see what local networks existed I could actually see the TC that way. So I told airport to "join" the TC network and then I could access my settings on my iMac. All looked well and I again got stuck on the password setting to join my iMac network. That was an old WEP 40 bit password. Well I went back to airport and set up a 128 bit WEP password protection (required longer password of at least 13 chars) and then back to configure the TC via my iMac, and viola that worked, and I am now backing up my iMac wirelessly (while it still is connected to internet not TC) and also backing up my wife's G4 powerbook at same time. It is slow but backups are proceeding and all seems to be well.
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  • Migration assistant screw up, Mac Pro not seeing wifi/TC

    Hi
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    I turn on TC1/TC3 (separately and not at the same time, then at the same time), but the MP does not see them. I've reset TC3, rebooted the MP and still the MP does not see it.
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    Take the MP and connect it via ETH to your main router.
    Restart the machine holding down command option R, you should see a spinning globe
    Open disk utility and reformat the MP HD as Mac journaled
    Then install OSX on this drive

  • Just upgraded to Lion.  Imac not seeing my calendar updates that I put into ipad or iphone

    I just upgraded to Lion and my Imac is not seeing my recently updated calendar events placed on ipad or iphone.

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    ...Thinking that the antenna is not properly installed. Will try again...

  • New iMac not "seeing" Time Capsule

    Hi Everybody,
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    Last October, the optic drive on my 27" iMac started having problems. As it was still under guarantee, I took it to the vendor who advised that I back-up all data on it before doing so. I bought a Time Capsule from them, and was able through the Aiport Utility to set it up and back-up all data through Time Machine. Took the iMac back to the vendor and was eventually told it could not be repaired. As that coincided with the start of the wating for the new iMacs, I received a voucher and was able last week to get my new model iMac 27".
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    Thank you very much!

    Do you have an ethernet cable by which you can connect directly to the Time Capsule to get it configured? Sometimes that works when the Mac can't see the network.
    Do you see any other networks on the WiFi when you search for the Time Capsule's network?

  • TS1398 after upgrade to ios 6.0.1 WIFI is very weak or can not see WiFi networks (iPhone 3GS)

    Is there a way to restore the WiFi functionalilt of the iPHONE 3Gs after itw was upgraded to IOS 6.0.1 ?
    I see there are lots of things on the internet, but nothing that actually works !

    rzulfikar wrote:
    Thanks Chris for your solution.
    But just for you know that I bought Apple to get the 'after service', they should've warn the users not to upgrade to a higher OS if it can caused the phone 'dead'. Mine was totally unusable when it's just been upgraded. It stayed in the recovery mode and couldn't be restored. So I brought it to the nearest store and they did that to me, and eventually the phone is working, only it cannot detect my SIM Card...
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  • Need suggestion for iphone 4 not seeing wifi network

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