yvonfromsorel_tracy

Q: iMac freezes up and emits loud sound...

after running normaly for several hours, iMac freezes up, shows a blank screen, and emits an intermittent loud sound like a klaxon. it will not stop until I hold in  the on/off button in for several seconds. after a few minutes of rest, iMac will restart normaly. this behavior  reoccurs at several days intervals. Please help!

 

iMac 21.5 inch mid-2010

3.06 ghz intel core I3

8 Go 1333 mhz ddr3

mac os x v. 10.7.3

 

Yvon

iMac, Mac OS X (10.7), 21.5" mid-2010

Posted on Mar 29, 2012 7:59 PM

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Q: iMac freezes up and emits loud sound...

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  • Helpful answers

  • by Carolyn Samit,Helpful

    Carolyn Samit Carolyn Samit Mar 29, 2012 8:39 PM in response to yvonfromsorel_tracy
    Level 10 (123,666 points)
    Apple Music
    Mar 29, 2012 8:39 PM in response to yvonfromsorel_tracy

    Hi ...

     

    Does it sound like a "beep" ??  Might be a RAM issue  (memory).

     

     

    Power On Self-Test Beep Definition - Part 2

  • by yvonfromsorel_tracy,Helpful

    yvonfromsorel_tracy yvonfromsorel_tracy Mar 29, 2012 8:43 PM in response to Carolyn Samit
    Level 1 (4 points)
    Mar 29, 2012 8:43 PM in response to Carolyn Samit

    it sounds more like a loud klaxon or also like a foghorn...sounds at regular intervals...

  • by Carolyn Samit,

    Carolyn Samit Carolyn Samit Mar 29, 2012 8:45 PM in response to yvonfromsorel_tracy
    Level 10 (123,666 points)
    Apple Music
    Mar 29, 2012 8:45 PM in response to yvonfromsorel_tracy

    Check System Preferences > Sound > Sound Effects

     

    Deselect:  Play user interface sound effects

     

    Restart your Mac to test.

  • by Linc Davis,

    Linc Davis Linc Davis Mar 29, 2012 9:21 PM in response to yvonfromsorel_tracy
    Level 10 (208,037 points)
    Applications
    Mar 29, 2012 9:21 PM in response to yvonfromsorel_tracy

    Please read this whole message before doing anything.

     

    This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.

     

    Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software – potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions – they’re easy to carry out and won’t change anything on your Mac.

     

    These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing.

     

    Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.

     

    Some of the commands will line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then either copy or drag it. The headings “Step 1” and so on are not part of the commands.

     

    Note: If you have more than one user account, Step 2 must be taken as an administrator. Ordinarily that would be the user created automatically when you booted the system for the first time. The other steps should be taken as the user who has the problem, if different. Most personal Macs have only one user, and in that case this paragraph doesn’t apply.

     

    Launch the Terminal application in any of the following ways:

     

    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

     

    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

     

    ☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Terminal in the page that opens.

     

    When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign (“$”) or a percent sign (“%”). If you get the percent sign, enter “sh” (without the quotes) and press return. You should then get a new line ending in a dollar sign.

     

    Step 1

     

    Copy or drag – do not type – the line below into the Terminal window, then press return:

     

    kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}'
    

     

    Post the lines of output (if any) that appear below what you just entered (the text, please, not a screenshot.)

     

    Step 2

     

    Repeat with this line:

     

    sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix)|edu\.mit|org\.(amavis|apache|cups|isc|ntp|postfix|x)/{print $3}'
    

     

    This time, you'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. You don't need to post the warning.

     

    Step 3

     

    launchctl list | sed 1d | awk '!/0x|com\.apple|edu\.mit|org\.(x|openbsd)/{print $3}'
    

     

    Step 4

     

    ls -1A /e*/mach* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta}* L*/Fonts 2> /dev/null
    

     

    Important: If you synchronize with a MobileMe account, your me.com email address may appear in the output of the above command. If so, anonymize it before posting.

     

    Step 5

     

    osascript -e 'tell application "System Events" to get name of every login item' 2> /dev/null
    

     

    Remember, steps 1-5 are all drag-and-drop or copy-and-paste, whichever you prefer – no typing, except your password. Also remember to post the output.

     

    You can then quit Terminal.

  • by yvonfromsorel_tracy,

    yvonfromsorel_tracy yvonfromsorel_tracy Mar 30, 2012 6:49 AM in response to Linc Davis
    Level 1 (4 points)
    Mar 30, 2012 6:49 AM in response to Linc Davis

    I will now wait for the problem to reoccur and will come back here later...

    thank you very much for helping.

  • by Steveo1028,

    Steveo1028 Steveo1028 Jun 8, 2012 7:08 AM in response to Linc Davis
    Level 1 (0 points)
    iPhone
    Jun 8, 2012 7:08 AM in response to Linc Davis

    Hi Linc

     

    I was trying to figuer out what was wrong with my (mid) 2010 iMac i3 21.5 when i stumbled upon your post. I have done all the cammannds as you had put them on this page. If you wouldnt mind going over them, cause they dont mean anything to me. I am new to Mac and i would really like to get this sorted out! My iMac is making the same beeping with a blank screen and i have to shut it off in order to get it to stop. Normally happens while in sleep mode. Thank you for your time and i hope i did all of the terminal right. Ps i am new to blogs and such as well so if i wasnt supposed to send as a reply sorry!

    Heres is my Terminal report

     

    t system files. Please double-check your

    typing when using sudo. Type "man sudo" for more information.

     

    To proceed, enter your password, or type Ctrl-C to abort.

     

    Password:

    Sorry, try again.

    Password:

    com.parallels.vm.prl_naptd

    com.parallels.desktop.launchdaemon

    com.microsoft.office.licensing.helper

    new-host-3:~ stevesanger$ launchctl list | sed 1d | awk '!/0x|com\.apple|edu\.mit|org\.(x|openbsd)/{print $3}'

    com.parallels.vm.prl_pcproxy

    com.parallels.DesktopControlAgent

    com.parallels.desktop.client.launch

    new-host-3:~ stevesanger$ ls -1A /e*/mach* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta} * L*/Fonts 2> /dev/null

    /Library/Components:

     

    /Library/Extensions:

     

    /Library/Frameworks:

    NyxAudioAnalysis.framework

    PluginManager.framework

     

    /Library/Input Methods:

     

    /Library/Internet Plug-Ins:

    Flash Player.plugin

    JavaAppletPlugin.plugin

    NP-PPC-Dir-Shockwave

    Quartz Composer.webplugin

    QuickTime Plugin.plugin

    SharePointBrowserPlugin.plugin

    SharePointWebKitPlugin.webplugin

    flashplayer.xpt

    iPhotoPhotocast.plugin

    nsIQTScriptablePlugin.xpt

     

    /Library/Internet Plug-Ins (Disabled):

    Flash Player.plugin

     

    /Library/Keyboard Layouts:

     

    /Library/LaunchAgents:

    com.parallels.DesktopControlAgent.plist

    com.parallels.desktop.launch.plist

    com.parallels.vm.prl_pcproxy.plist

     

    /Library/LaunchDaemons:

    com.microsoft.office.licensing.helper.plist

    com.parallels.desktop.launchdaemon.plist

     

    /Library/PreferencePanes:

    Flash Player.prefPane

     

    /Library/PrivilegedHelperTools:

    com.microsoft.office.licensing.helper

     

    /Library/QuickLook:

    GBQLGenerator.qlgenerator

    iWork.qlgenerator

     

    /Library/QuickTime:

    AppleIntermediateCodec.component

    AppleMPEG2Codec.component

     

    /Library/Spotlight:

    AppleWorks.mdimporter

    GBSpotlightImporter.mdimporter

    Microsoft Office.mdimporter

    iWork.mdimporter

     

    /Library/StartupItems:

     

    /etc/mach_init.d:

    dashboardadvisoryd.plist

     

    /etc/mach_init_per_login_session.d:

     

    /etc/mach_init_per_user.d:

     

    Library/Fonts:

     

    Library/Input Methods:

    .localized

     

    Library/Internet Plug-Ins:

     

    Library/Keyboard Layouts:

     

    Library/LaunchAgents:

    com.apple.CSConfigDotMacCert-sanger5908@me.com-SharedServices.Agent.plist

     

    Library/PreferencePanes:

    new-host-3:~ stevesanger$ osascript -e 'tell application "System Events" to get name of every login item' 2> /dev/null

    iTunesHelper

    new-host-3:~ stevesanger$

  • by NightTHRIVe,

    NightTHRIVe NightTHRIVe Sep 8, 2012 2:09 PM in response to Linc Davis
    Level 1 (0 points)
    Sep 8, 2012 2:09 PM in response to Linc Davis

    Here is what I have...

     

     

    1.   kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}'

     

    com.squirrels.airparrot.framebuffer (3)

    com.Greatdy.driver.SystemAudioCapture (1.0.0)

    com.logmein.driver.LogMeInSoundDriver (1.0.0)

    com.Cycling74.driver.Soundflower (1.5.2)

    com.logmein.hamachi (1.0)

    org.virtualbox.kext.VBoxDrv (4.1.8)

    org.virtualbox.kext.VBoxUSB (4.1.8)

    org.virtualbox.kext.VBoxNetFlt (4.1.8)

    org.virtualbox.kext.VBoxNetAdp (4.1.8)

     

     

     

    2.   sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix)|edu\.mit|org\.(amavis|apache|cups|isc|ntp|postfi x|x)/{print $3}'

     

    Password:

    com.wyse.PocketCloud

    com.starfield.backupservice

    gs-server

    com.sharpcast.xfsmond

    com.p5sys.jumpdesktop.service

    com.microsoft.office.licensing.helper

    com.micromat.TechToolProDaemon

    com.logmein.raupdate

    com.logmein.logmeinserver

    com.logmein.hamachi

    com.icyblaze.iDocumentHelper

    com.google.keystone.daemon

    com.adobe.SwitchBoard

    com.adobe.fpsaud

     

     

    3.    launchctl list | sed 1d | awk '!/0x|com\.apple|edu\.mit|org\.(x|openbsd)/{print $3}'

    com.kodak.ShareButtonAgent

    com.wyse.MacCompanion

    com.p5sys.jumpdesktop.agent

    com.micromat.TechToolProAgent

    com.logmein.logmeinguiagent

    com.logmein.logmeingui

    com.logmein.hamachimb

    com.google.keystone.system.agent

    com.nchsoftware.inventoria.agent

    com.adobe.ARM.202f4087f2bbde52e3ac2df389f53a4f123223c9cc56a8fd83a6f7ae

    com.adobe.AAM.Scheduler-1.0

     

     

    4.     ls -1A /e*/mach* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta} * L*/Fonts 2> /dev/null

    /Library/Components:

     

    /Library/Extensions:

    VBoxDrv.kext

    VBoxNetAdp.kext

    VBoxNetFlt.kext

    VBoxUSB.kext

    ham.kext

     

    /Library/Frameworks:

    AEProfiling.framework

    AERegistration.framework

    Adobe AIR.framework

    AudioMixEngine.framework

    HPSmartPrint.framework

    Mono.framework

    NyxAudioAnalysis.framework

    PluginManager.framework

    SRFrameBufferConnection.framework

    iLifeFaceRecognition.framework

    iLifeKit.framework

    iLifePageLayout.framework

    iLifeSQLAccess.framework

    iLifeSlideshow.framework

    iTunesLibrary.framework

     

    /Library/Input Methods:

     

    /Library/InputManagers:

    CTLoader

     

    /Library/Internet Plug-Ins:

    AdobePDFViewer.plugin

    AdobePDFViewerNPAPI.plugin

    Flash Player.plugin

    JavaAppletPlugin.plugin

    LogMeIn.plugin

    LogMeInSafari32.plugin

    LogMeInSafari64.plugin

    NP_2020Player_IKEA.plugin

    NP_2020Player_WEB.plugin

    Quartz Composer.webplugin

    QuickTime Plugin.plugin

    SharePointBrowserPlugin.plugin

    SharePointWebKitPlugin.webplugin

    Silverlight.plugin

    flashplayer.xpt

    googletalkbrowserplugin.plugin

    iPhotoPhotocast.plugin

    npfoliopluginpu.plugin

    npgtpo3dautoplugin.plugin

    nsIQTScriptablePlugin.xpt

     

    /Library/Keyboard Layouts:

     

    /Library/LaunchAgents:

    SBA_ListenerAgent.plist

    com.adobe.AAM.Updater-1.0.plist

    com.google.keystone.agent.plist

    com.logmein.hamachimb.plist

    com.logmein.logmeingui.plist

    com.logmein.logmeinguiagent.plist

    com.logmein.logmeinguiagentatlogin.plist

    com.micromat.TechToolProAgent.plist

    com.p5sys.jumpdesktop.agent.plist

    com.wyse.MacCompanion.plist

     

    /Library/LaunchDaemons:

    com.adobe.SwitchBoard.plist

    com.adobe.fpsaud.plist

    com.google.keystone.daemon.plist

    com.icyblaze.iDocumentHelper.plist

    com.logmein.hamachi.plist

    com.logmein.logmeinserver.plist

    com.logmein.raupdate.plist

    com.micromat.TechToolProDaemon.plist

    com.microsoft.office.licensing.helper.plist

    com.p5sys.jumpdesktop.service.plist

    com.sharpcast.xfsmond.plist

    com.siber.gs-server.plist

    com.starfield.backupservice.plist

    com.wyse.PocketCloud.plist

     

    /Library/PreferencePanes:

    Flash Player.prefPane

    TechTool Protection.prefPane

     

    /Library/PrivilegedHelperTools:

    com.microsoft.office.licensing.helper

     

    /Library/QuickLook:

    GBQLGenerator.qlgenerator

    iBooksAuthor.qlgenerator

    iWork.qlgenerator

     

    /Library/QuickTime:

    AppleAVCIntraCodec.component

    AppleHDVCodec.component

    AppleIntermediateCodec.component

    AppleMPEG2Codec.component

    AppleProResCodec.component

    DVCPROHDCodec.component

    FCP Uncompressed 422.component

    IMXCodec.component

     

    /Library/ScriptingAdditions:

    Adobe Unit Types.osax

     

    /Library/Spotlight:

    GBSpotlightImporter.mdimporter

    LogicPro.mdimporter

    Microsoft Office.mdimporter

    iBooksAuthor.mdimporter

    iWork.mdimporter

     

    /Library/StartupItems:

    VirtualBox

     

    /etc/mach_init.d:

     

    /etc/mach_init_per_login_session.d:

     

    /etc/mach_init_per_user.d:

     

    Library/Address Book Plug-Ins:

    YMsgrCallABPlugin.bundle

    YMsgrMsnABPlugin.bundle

    YMsgrSmsABPlugin.bundle

    YMsgrYimABPlugin.bundle

     

    Library/Fonts:

    APANRG__.TTF

    ASans.ttf

    ASansBOLD.ttf

    ASansBlack.ttf

    ASansreg.ttf

    Archive.otf

    BlackOpsOne.ttf

    Brexia.otf

    BrexiaBold.otf

    BrexiaBoldItalic.otf

    BrexiaCondBold.otf

    BrexiaCondItalic.otf

    BrexiaCondensed.otf

    BrexiaExpBold.otf

    BrexiaExpItalic.otf

    BrexiaExpanded.otf

    BrexiaItalic.otf

    BrexiaNarBold.otf

    BrexiaNarItalic.otf

    BrexiaNarrow.otf

    BrexiaOutline.otf

    BrexiaWide.otf

    BrexiaWideBold.otf

    BrexiaWideItalic.otf

    CODE Bold.otf

    CODE Light.otf

    Carton-Slab.otf

    Dekar Light.otf

    Dekar.otf

    FV_Almelo.ttf

    Facet Black.ttf

    Facet Ultra.ttf

    Florsn01.ttf

    Florsn38.ttf

    Florsn42.ttf

    Florsn45.ttf

    Florsn46.ttf

    Flubber.ttf

    FrancoisOne.ttf

    Gota Light.otf

    Gota.otf

    Hagin Caps Medium.otf

    Hagin Caps Thin.otf

    Hero Light.otf

    Hero.otf

    Homestead-Display.otf

    Homestead-Inline.otf

    Homestead-One.otf

    Homestead-Regular.otf

    Homestead-Three.otf

    Homestead-Two.otf

    Intro Inline.otf

    Intro.otf

    Jura-Bold.ttf

    Jura-BoldItalic.ttf

    Jura-Italic.ttf

    Jura-Regular.ttf

    Kabel Light.otf

    Kabel.otf

    Lavanderia Delicate.otf

    Lavanderia Regular.otf

    Lavanderia Sturdy.otf

    Maiandra GD Italic.ttf

    Maiandra GD.ttf

    NothingYouCouldDo.ttf

    Otama-ep.otf

    Parisienne-Regular.ttf

    Poly-Italic.ttf

    Poly-Regular.ttf

    Quad Black.otf

    Quad Light.otf

    Quad Ultra.otf

    RBNo2Light.otf

    RBNo2Light_a.otf

    Redressed.ttf

    Rex Bold Inline.otf

    Rex Bold.otf

    Rex Light.otf

    RockSalt.ttf

    SAF.otf

    Scruffy-Light.otf

    Scruffy-Regular.otf

    Socialico.otf

    Static Bold Italic.otf

    Static Bold.otf

    Static Italic.otf

    Static.otf

    VAL Stencil.otf

    Weston Free.otf

    Weston Light Free.otf

    apantasia.ttf

    boston.ttf

    orbitron-black.otf

    orbitron-bold.otf

    orbitron-light.otf

    orbitron-medium.otf

     

    Library/Input Methods:

    .localized

     

    Library/Internet Plug-Ins:

    Google Earth Web Plug-in.plugin

    WbeTools64_14.plugin

    WebEx64.plugin

    fileEditTool64_15.plugin

    rf-firefox-plugin.plugin

    rf-safari-plugin.webplugin

     

    Library/Keyboard Layouts:

     

    Library/LaunchAgents:

    com.adobe.AAM.Updater-1.0.plist

    com.adobe.ARM.202f4087f2bbde52e3ac2df389f53a4f123223c9cc56a8fd83a6f7ae.plist

    com.apple.AddressBook.ScheduledSync.PHXCardDAVSource.ECA08935-6CBD-472D-B6B7-E5C 63BF63FB9.plist

    com.apple.CSConfigDotMacCert-xxxxxx@me.com-SharedServices.Agent.plist

    com.apple.FolderActions.enabled.plist

    com.apple.FolderActions.folders.plist

    com.apple.SafariBookmarksSyncer.plist

    com.nchsoftware.inventoria.agent.plist

    org.virtualbox.vboxwebsrv.plist

     

    Library/PreferencePanes:

     

    Library/ScriptingAdditions:

    TextExpander Addition.osax

     

    Library/Services:

    Sync with MacDropAny.workflow

     

    LimeWire/Incomplete:

     

     

    5.    osascript -e 'tell application "System Events" to get name of every login item' 2> /dev/null

    Cobook, Numi, iTunesHelper, PhoneViewHelper, DeskTime, AdobeResourceSynchronizer, TextExpander, WorkspaceUpdate, Fantastical, DriveMapReconnect, SimpleCap, Dropbox