Wireless problem in macbook pro

hi,when i install mac osx lion,i have a problem with my wireless internet,sometimes my macbook pro cant find my wireless network,how can i fix this problem?

Many have this problem.
Clicking the Airport/WiFi icon on the menubar and selecting your network from the dropdown is the only way to join the network.
Usually a pop up window comes up to select the network.
No satisfactory solution is available though many tips have been suggested.

Similar Messages

  • Problem description: (MacBook Pro 15" late 2008, OSX Yosemite 10.10.2 installed, no pending updates) computer is running very slow - takes 2-3 minutes to open apps such as Pages, even when no other apps are open.  Randomly freezes and becomes unrespo

    Problem description:
    (MacBook Pro 15” late 2008, OSX Yosemite 10.10.2 installed, no pending updates) computer is running very slow - takes 2-3 minutes to open apps such as Pages, even when no other apps are open.  Randomly freezes and becomes unresponsive, requiring forced power down.  Randomly logs off.  Removed Kodak AIO software via Clean My Mac2, but BonjourAgent still there and requesting access.  Cleaned weekly with Clean My Mac2 and running Sophos AntiVirus. 2GB memory installed.  Currently 169.99 GB available of 249.2 GB capacity.
    Help?
    EtreCheck version: 2.1.8 (121)
    Report generated March 21, 2015 at 11:35:35 AM EDT
    Download EtreCheck from http://etresoft.com/etrecheck
    Click the [Click for support] links for help with non-Apple products.
    Click the [Click for details] links for more information about that line.
    Hardware Information: ℹ️
        MacBook Pro (15-inch, Late 2008) (Technical Specifications)
        MacBook Pro - model: MacBookPro5,1
        1 2.4 GHz Intel Core 2 Duo CPU: 2-core
        2 GB RAM Upgradeable
            BANK 0/DIMM0
                1 GB DDR3 1067 MHz ok
            BANK 0/DIMM1
                1 GB DDR3 1067 MHz ok
        Bluetooth: Old - Handoff/Airdrop2 not supported
        Wireless:  en1: 802.11 a/b/g/n
        Battery Health: Normal - Cycle count 59
    Video Information: ℹ️
        NVIDIA GeForce 9400M - VRAM: 256 MB
            Color LCD 1440 x 900
        NVIDIA GeForce 9600M GT - VRAM: 256 MB
    System Software: ℹ️
        OS X 10.10.2 (14C1514) - Time since boot: 0:13:37
    Disk Information: ℹ️
        Hitachi HTS543225L9SA02 disk0 : (250.06 GB)
            EFI (disk0s1) <not mounted> : 210 MB
            Macintosh HD (disk0s2) / : 249.20 GB (168.91 GB free)
            Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB
        HL-DT-ST DVDRW  GS21N 
    USB Information: ℹ️
        Apple Inc. Built-in iSight
        Apple Inc. BRCM2046 Hub
            Apple Inc. Bluetooth USB Host Controller
        Apple, Inc. Apple Internal Keyboard / Trackpad
        Apple Computer, Inc. IR Receiver
    Gatekeeper: ℹ️
        Mac App Store and identified developers
    Kernel Extensions: ℹ️
            /Library/Extensions
        [not loaded]    com.leapfrog.driver.LfConnectDriver (1.11.1 - SDK 10.10) [Click for support]
        [loaded]    com.sophos.kext.sav (9.2.50 - SDK 10.8) [Click for support]
        [loaded]    com.sophos.nke.swi (9.2.50 - SDK 10.8) [Click for support]
            /System/Library/Extensions
        [not loaded]    com.leapfrog.codeless.kext (2) [Click for support]
    Launch Agents: ℹ️
        [not loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
        [running]    com.kodak.BonjourAgent.plist [Click for support]
        [loaded]    com.oracle.java.Java-Updater.plist [Click for support]
        [running]    com.sophos.uiserver.plist [Click for support]
    Launch Daemons: ℹ️
        [loaded]    com.adobe.fpsaud.plist [Click for support]
        [loaded]    com.adobe.SwitchBoard.plist [Click for support]
        [loaded]    com.leapfrog.connect.authdaemon.plist [Click for support]
        [loaded]    com.macpaw.CleanMyMac2.Agent.plist [Click for support]
        [loaded]    com.oracle.java.Helper-Tool.plist [Click for support]
        [loaded]    com.oracle.java.JavaUpdateHelper.plist [Click for support]
        [running]    com.sophos.common.servicemanager.plist [Click for support]
    User Launch Agents: ℹ️
        [not loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
        [loaded]    com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist [Click for support]
        [loaded]    com.macpaw.CleanMyMac2Helper.scheduledScan.plist [Click for support]
        [loaded]    com.macpaw.CleanMyMac2Helper.trashWatcher.plist [Click for support]
    User Login Items: ℹ️
        Dropbox    Application  (/Applications/Dropbox.app)
    Internet Plug-ins: ℹ️
        AdobeExManDetect: Version: AdobeExManDetect 1.1.0.0 - SDK 10.7 [Click for support]
        FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]
        Default Browser: Version: 600 - SDK 10.10
        Flash Player: Version: 16.0.0.305 - SDK 10.6 Outdated! Update
        AdobeAAMDetect: Version: AdobeAAMDetect 2.0.0.0 - SDK 10.7 [Click for support]
        AmazonMP3DownloaderPlugin1017265: Version: AmazonMP3DownloaderPlugin 1.0.17 [Click for support]
        JavaAppletPlugin: Version: Java 8 Update 31 Check version
        AmazonMP3DownloaderPlugin: Version: AmazonMP3DownloaderPlugin 1.0.17 [Click for support]
        QuickTime Plugin: Version: 7.7.3
        iPhotoPhotocast: Version: 7.0 - SDK 10.8
    User internet Plug-ins: ℹ️
        CitrixOnlineWebDeploymentPlugin: Version: 1.0.94 [Click for support]
        Google Earth Web Plug-in: Version: 6.0 [Click for support]
    Safari Extensions: ℹ️
        AdBlock
        Disconnect
        Add To Amazon Wish List
    3rd Party Preference Panes: ℹ️
        Flash Player  [Click for support]
        Java  [Click for support]
        Tuxera NTFS  [Click for support]
    Time Machine: ℹ️
        Skip System Files: NO
        Mobile backups: OFF
        Auto backup: YES
        Volumes being backed up:
            Macintosh HD: Disk size: 249.20 GB Disk used: 80.29 GB
        Destinations:
            Backup [Local]
            Total size: 63.67 GB
            Total number of backups: 1
            Oldest backup: 2015-02-23 16:16:08 +0000
            Last backup: 2015-02-23 16:16:08 +0000
            Size of backup disk: Too small
                Backup size 63.67 GB < (Disk used 80.29 GB X 3)
    Top Processes by CPU: ℹ️
             5%    WindowServer
             1%    loginwindow
             0%    AppleSpell
             0%    SophosUIServer
             0%    SophosAntiVirus
    Top Processes by Memory: ℹ️
        118 MB    InterCheck
        101 MB    SophosScanD
        60 MB    Dropbox
        54 MB    mds_stores
        41 MB    SophosAntiVirus
    Virtual Memory Information: ℹ️
        49 MB    Free RAM
        682 MB    Active RAM
        652 MB    Inactive RAM
        315 MB    Wired RAM
        1.49 GB    Page-ins
        2 MB    Page-outs
    Diagnostics Information: ℹ️
        Mar 21, 2015, 11:18:52 AM    Self test - passed
        Mar 21, 2015, 10:53:03 AM    /Library/Logs/DiagnosticReports/SophosUIServer_2015-03-21-105303_[redacted].cra sh
        Mar 19, 2015, 07:59:03 PM    /Library/Logs/DiagnosticReports/CalNCService_2015-03-19-195903_[redacted].crash

    Linc Davis wrote:
    Slow performance after installing Yosemite on an older Mac is often caused by inadequate memory. Although you can install the upgrade on a Mac with 2 GB of memory, experience has shown that at least 4 GB is needed for full performance.
    Select About This Mac from the Apple menu. If you have less than 4 GB of memory, and your model has upgradable memory, install as much as it can take, or at least that much. Any reputable RAM vendor will have a web form in which you can select the Mac model and be directed to compatible parts.
    Memory in the MacBook Air is not upgradable. If that's what you have, you should restore the previous system from a backup, or replace the machine. Ask if you need guidance.
    The Etrecheck report clearly shows that SylvieRose has a Macbook Pro, not a Macbook Air and that there are only 2 GB  RAM installed.  The Etrecheck report can be very informative if one takes the time to examine it. 
    Ciao.

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                 Model Identifier 5,1 or later
             3. MacBook Pro (Mid/Late 2007 or newer) — Model Identifier 3,1 or later
             4. MacBook Air (Late 2008 or newer) — Model Identifier 2,1 or later
             5. Mac mini (Early 2009 or newer) — Model Identifier 3,1 or later
             6. Mac Pro (Early 2008 or newer) — Model Identifier 3,1 or later
             7. Xserve (Early 2009) — Model Identifier 3,1 or later
    To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
    Are my applications compatible?
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    If your computer does not meet the requirements to install Mavericks, it may still meet the requirements to install Lion.
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