Audio: no input - output devices macbook pro late 2011

My computer has no audio input or output devices anymore.
This problem appeared after I had used a software oscilloscope to test an amplifier. The amp was connected through the mic input. It worked for a couple of minutes and then the audio went mute. I'm suspecting, that the circuits took a hit although the input power wasn't excessive.
I have reinstalled the OS, restarted the coreaudio daemons, plugged-in / out a mini jack, reinitialized the audio preference files but all with no results. The audio is dead... as if the relative circuits where non existant .
The Apple hardware test doesn't seem to see the audio circuits and ends with a "all ok".
I'm left with the following questions :
Is there a hardware test for audio ? Is there a fuse / protection circuit for the audio circuit ?
Thank's for any ideas.
See sig. for hardware

Hi,
I have exactly the same problem and It happened in a similar situation.
Did you find a solution?
Thanks

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    Hardware Information: ℹ️
        MacBook Pro (13-inch, Late 2011) (Technical Specifications)
        MacBook Pro - model: MacBookPro8,1
        1 2.4 GHz Intel Core i5 CPU: 2-core
        4 GB RAM Upgradeable
            BANK 0/DIMM0
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            BANK 1/DIMM0
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        Bluetooth: Old - Handoff/Airdrop2 not supported
        Wireless:  en1: 802.11 a/b/g/n
        Battery Health: Normal - Cycle count 278
    Video Information: ℹ️
        Intel HD Graphics 3000 - VRAM: 384 MB
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    System Software: ℹ️
        OS X 10.10.2 (14C109) - Time since boot: 0:40:45
    Disk Information: ℹ️
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        Apple Inc. FaceTime HD Camera (Built-in)
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        Apple Inc. BRCM2070 Hub
            Apple Inc. Bluetooth USB Host Controller
        Apple Computer, Inc. IR Receiver
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        Apple Inc. thunderbolt_bus
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        [loaded]    com.rogueamoeba.instanton-agent.plist [Click for support]
        [loaded]    jp.co.canon.MasterInstaller.plist [Click for support]
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        [not loaded]    org.virtualbox.vboxwebsrv.plist [Click for support]
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        Mar  1 13:56:07 rtR0InitNative: warning! failed to resolve special kernel symbols
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        Mar  3 14:08:59 WindowServer: WSGetSurfaceInWindow : Invalid surface 948402577 for window 33
        Mar  3 14:08:59 WindowServer: WSGetSurfaceInWindow : Invalid surface 948402577 for window 33
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        com.apple.MobileFileIntegrity
        com.apple.awdd
        com.apple.backupd-auto
        com.apple.cache_delete
        com.apple.cfprefsd.xpc.daemon
        com.apple.cmio.registerassistantservice
        com.apple.coreduetd
        com.apple.coresymbolicationd
        com.apple.ctkd
        com.apple.diagnosticd
        com.apple.icloud.findmydeviced
        com.apple.iconservices.iconservicesagent
        com.apple.iconservices.iconservicesd
        com.apple.ifdreader
        com.apple.nehelper
        com.apple.networkd_privileged
        com.apple.nsurlsessiond_privileged
        com.apple.nsurlstoraged
        com.apple.sandboxd
        com.apple.secinitd
        com.apple.softwareupdated
        com.apple.spindump
        com.apple.systemadministration.writeconfig
        com.apple.systemstatsd
        com.apple.tccd.system
        com.apple.watchdogd
        com.apple.wdhelper
        com.apple.xpc.smd
        com.microsoft.office.licensing.helper
        com.oracle.java.Helper-Tool
        com.oracle.java.JavaUpdateHelper
        com.rogueamoeba.instanton-agent
        jp.co.canon.MasterInstaller
        org.cups.cupsd
        org.macosforge.xquartz.privileged_startx
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        com.apple.CloudPhotosConfiguration
        com.apple.DataDetectorsDynamicData
        com.apple.InputMethodKit.UserDictionary
        com.apple.MailServiceAgent
        com.apple.cfprefsd.xpc.agent
        com.apple.imdpersistence.IMDPersistenceAgent
        com.apple.internetaccounts
        com.apple.pluginkit.pkd
        com.apple.sbd
        com.apple.secd
        com.apple.secinitd
        com.apple.security.cloudkeychainproxy3
        com.apple.tccd
    User login items
        Activity Monitor
        - /Applications/Utilities/Activity Monitor.app
    Safari extensions
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        - com.betafish.adblockforsafari
        DuckDuckGo
        - com.duckduckgo.safari
        Ghostery
        - com.betteradvertising.ghostery
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        bird 62
        cloudd 19
        comapple.InputMethodKit.UserDictionary 4
        CallHistorySyncHelper 4
        Safari 1
    Continuity errors
        sharingd 7
    Restricted files: 97
    Lockfiles: 164
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        <key>StartCalendarInterval</key>
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        <key>Minute</key>
        <integer>38</integer>
        <key>Weekday</key>
        <integer>2</integer>
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        </dict>
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        <?xml version="1.0" encoding="UTF-8"?>
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        <key>MachServices</key>
        <dict>
        <key>com.rogueamoeba.instanton-agent</key>
        <true/>
        </dict>
        <key>Program</key>
        <string>/Library/Audio/Plug-Ins/HAL/InstantOn.driver/Contents/MacOS/instanton-a gent</string>
        <key>ProgramArguments</key>
        <array>
        <string>instanton-agent</string>
        </array>
        <key>ThrottleInterval</key>
        <integer>0</integer>
        </dict>
        </plist>
    Contents of /Library/LaunchDaemons/jp.co.canon.MasterInstaller.plist
        - mod date: Nov 25 22:39:19 2013
        - checksum: 1894334785
        <?xml version="1.0" encoding="UTF-8"?>
        <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
        <plist version="1.0">
        <dict>
        <key>Label</key>
        <string>jp.co.canon.MasterInstaller</string>
        <key>ProgramArguments</key>
        <array>
        <string>/Library/PrivilegedHelperTools/jp.co.canon.MasterInstaller</string>
        </array>
        <key>ServiceIPC</key>
        <true/>
        <key>Sockets</key>
        <dict>
        <key>MasterSocket</key>
        <dict>
        <key>SockFamily</key>
        <string>Unix</string>
        <key>SockPathMode</key>
        <integer>438</integer>
        <key>SockPathName</key>
        <string>/var/run/jp.co.canon.MasterInstaller.socket</string>
        <key>SockType</key>
        <string>Stream</string>
        </dict>
        ...and 3 more line(s)
    Contents of /Library/LaunchDaemons/org.virtualbox.startup.plist
        - mod date: Mar  1 13:56:03 2015
        - checksum: 3094394405
        <?xml version="1.0" encoding="UTF-8"?>
        <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
        <plist version="1.0">
        <dict>
            <key>Label</key>             <string>org.virtualbox.startup</string>
            <key>Disabled</key>          <false/>
            <key>RunAtLoad</key>         <true/>
            <key>KeepAlive</key>         <false/>
            <key>LaunchOnlyOnce</key>    <true/>
            <key>ProgramArguments</key>
                <array>
                    <string>/Library/Application Support/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh</string>
                    <string>restart</string>
                </array>
        </dict>
        </plist>
    Contents of /private/etc/ssh_config
        - mod date: Jan 20 11:13:19 2013
        - checksum: 1281775184
         Host *
           SendEnv LANG LC_*
        Host *
            XAuthLocation /opt/X11/bin/xauth
    Contents of Library/LaunchAgents/com.apple.SafariBookmarksSyncer.plist
        - mod date: Nov 11 12:53:23 2010
        - checksum: 1213721873
        <?xml version="1.0" encoding="UTF-8"?>
        <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
        <plist version="1.0">
        <dict>
        <key>Label</key>
        <string>com.apple.Safari</string>
        <key>LimitLoadToSessionType</key>
        <string>Aqua</string>
        <key>ProgramArguments</key>
        <array>
        <string>/Applications/Safari.app/Contents/SafariSyncClient.app/Contents/MacOS/S afariSyncClient</string>
        <string>--sync</string>
        <string>com.apple.Safari</string>
        <string>--entitynames</string>
        <string>com.apple.bookmarks.Bookmark,com.apple.bookmarks.Folder</string>
        </array>
        <key>RunAtLoad</key>
        <false/>
        <key>ThrottleInterval</key>
        <integer>60</integer>
        <key>WatchPaths</key>
        <array>
        <string>/Users/USER/Library/Safari/Bookmarks.plist</string>
        </array>
        </dict>
        ...and 1 more line(s)
    Contents of Library/LaunchAgents/org.virtualbox.vboxwebsrv.plist
        - mod date: Mar  1 13:56:19 2015
        - checksum: 3654809970
        <?xml version="1.0" encoding="UTF-8"?>
        <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
        <plist version="1.0">
        <dict>
          <key>Disabled</key>
          <true/>
          <key>KeepAlive</key>
          <false/>
          <key>Label</key>
          <string>org.virtualbox.vboxwebsvc</string>
          <key>Program</key>
          <string>/Applications/VirtualBox.app/Contents/MacOS/vboxwebsrv</string>
          <key>Sockets</key>
            <dict>
            <key>Listeners</key>
            <dict>
              <key>SockServiceName</key>
              <string>18083</string>
              <key>SockType</key>
              <string>stream</string>
              <key>SockFamily</key>
              <string>IPv4</string>
            </dict>
          </dict>
        </dict>
        ...and 1 more line(s)
    Bundles (new)
        /Applications/VirtualBox.app
        - org.virtualbox.app.VirtualBox
        /Users/USER/Downloads/EtreCheck.app
        - com.etresoft.EtreCheck
    Installations
        Office 2011 14.4.6 Update: 14/11/2014 3:29 pm
        Adobe Flash Player: 12/11/2014 7:12 pm
        Java 7 Update 71: 5/11/2014 1:23 pm
        Canon ScanGear: 29/10/2014 5:15 pm
        Adobe Flash Player: 26/10/2014 9:30 am
    Elapsed time (sec): 823

  • How do i use my imac 21.5" 2011 as a display for my macbook pro late 2011, through thunderbolt cable ? I have tried and it doesnt seem to work, neither does target disk mode.

    How do i use my imac 21.5" 2011 as a display for my macbook pro late 2011, through thunderbolt cable ? I have tried and it doesnt seem to work, neither does target disk mode.
    Could it be a borked cable ? I just bought it new from the store today, i have updated both imac and macbook pro to latest thunderbolt firmware and updates. Both 10.7.3.
    MacBook Pro:
      Vendor Name:    Apple, Inc.
      Device Name:    MacBook Pro
      UID:    0x0001000A17016E60
      Firmware Version:    22,1
      Port:
      Status:    No devices connected
      Link Status:    7
      Port Micro Firmware Version:    FFFF.FF.FF

    You are correct, here is what Apple Says:
    http://support.apple.com/kb/TS3775
    I was able to find these instructions, however they referr to 2009-2011 27" iMacs. I think it's the same, if it's not then contact Apple directly for instructions. If either of the machines is less than 90 days old or covered by AppleCare then call AppleCare tomorrow for help, they should be able to easily answer this for you. You will find the number in your manual or you can use the AppleCare Contact Info link.
    Your iMac should automatically recognize the presence of a digital video signal at the Mini DisplayPort and enter Target Display Mode.
    If your iMac does not automatically enter Target Display Mode, press command + F2 to manually enter Target Display Mode.

  • My japanese macbook pro (late 2011) physical keyboard does not match with the on screen japanese keyboard in windows 8.1 so does caps lock

    I am using windows 8.1 pro on my Japanese macbook pro (Late 2011) and enabled japanese language but the problem is that when i press caps lock (lower left corner) it changes the input method from english to japanese. I checked my on screen keyboard (OSK) in windows and its different from my physical keyboard i.e. keys are different on my physical keyboard compared to OSK. Can anyone help me?
    Thanks
    Tenadona

    Can I suggest the following articles, which are worth reviewing?
    Boot Camp: About keyboards and key assignment for Microsoft Windows - Apple Support
    Boot Camp: Apple Wireless Keyboard keyboard mapping in Windows - Apple Support
    Boot Camp: Windows commands on an Apple keyboard
    Windows does require language packs to be installed, if you want the physical keyboard to match the on-screen keyboard.

  • Macbook pro late 2011 starting problem

    I'm running OS Maverics 10.9.3 version on Macbook pro late 2011. Few days ago the OS got much slower than normal system. Then i installed the the new OS but it was good for few hours. Then after few hours it became slower again. Then I changed the HDD and installed the new OS. But I found the same problem again. Then I removed all backup files from the HDD. After removing all items it became to work normally. But after 15/17 days later when i'm trying to turn on the macbook a flashing folder icon appears then i pull down the display for a while. When the lights gone then i turn on again and it works normally. I tried the internet recovery option by pressing the (ctrl+R) button but it takes much time. But nothing happened. What is the problem?
    Here is my etrecheck result:
    EtreCheck version: 1.9.12 (48)
    Report generated July 3, 2014 at 2:17:37 AM GMT+6
    Hardware Information:
      MacBook Pro (13-inch, Late 2011) (Verified)
      MacBook Pro - model: MacBookPro8,1
      1 2.4 GHz Intel Core i5 CPU: 2 cores
      4 GB RAM
    Video Information:
      Intel HD Graphics 3000 - VRAM: 384 MB
      Color LCD 1280 x 800
    System Software:
      OS X 10.9.3 (13D65) - Uptime: 0 days 0:30:14
    Disk Information:
      TOSHIBA MQ01ABD050 disk0 : (500.11 GB)
      EFI (disk0s1) <not mounted>: 209.7 MB
      Mac HDD (disk0s2) / [Startup]: 499.76 GB (373.05 GB free)
      MATSHITADVD-R   UJ-8A8 
    USB Information:
      Apple Inc. FaceTime HD Camera (Built-in)
      Apple Inc. Apple Internal Keyboard / Trackpad
      Apple Inc. BRCM2070 Hub
      Apple Inc. Bluetooth USB Host Controller
      Apple Computer, Inc. IR Receiver
    Thunderbolt Information:
      Apple Inc. thunderbolt_bus
    Configuration files:
      /etc/hosts - Count: 20
    Gatekeeper:
      Anywhere
    Kernel Extensions:
      [not loaded] com.gct.driver.gdmuwm (1.0.8 - SDK 10.4) Support
    Problem System Launch Daemons:
      [failed] com.apple.wdhelper.plist
      [running] com.gct.dts.gdme2dn.plist Support
    Launch Daemons:
      [loaded] com.adobe.fpsaud.plist Support
      [loaded] com.microsoft.office.licensing.helper.plist Support
    Launch Agents:
      [not loaded] com.adobe.AAM.Updater-1.0.plist Support
    User Launch Agents:
      [loaded] com.google.keystone.agent.plist Support
      [running] com.moeppfdpoohhdcaefbfpmabjipnohiif.updater.plist Support
    User Login Items:
      iTunesHelper
    Internet Plug-ins:
      Flip4Mac WMV Plugin: Version: 3.2.0.16   - SDK 10.8 Support
      FlashPlayer-10.6: Version: 14.0.0.125 - SDK 10.6 Support
      QuickTime Plugin: Version: 7.7.3
      Flash Player: Version: 14.0.0.125 - SDK 10.6 Support
      AdobePDFViewer: Version: 10.0.0 Support
      AdobeAAMDetect: Version: AdobeAAMDetect 1.0.0.0 - SDK 10.6 Support
      Default Browser: Version: 537 - SDK 10.9
      SharePointBrowserPlugin: Version: 14.3.9 - SDK 10.6 Support
      Silverlight: Version: 5.1.30317.0 - SDK 10.6 Support
    Safari Extensions:
      Best YouTube Downloader: Version: 1.5.1
    Audio Plug-ins:
      BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
      AirPlay: Version: 2.0 - SDK 10.9
      AppleAVBAudio: Version: 203.2 - SDK 10.9
      iSightAudio: Version: 7.7.3 - SDK 10.9
    iTunes Plug-ins:
      Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
    User Internet Plug-ins:
      Picasa: Version: 1.0 - SDK 10.4 Support
    3rd Party Preference Panes:
      Flash Player  Support
      Flip4Mac WMV  Support
      Perian  Support
      Tuxera NTFS  Support
    Time Machine:
      Time Machine not configured!
    Top Processes by CPU:
          3% WindowServer
          1% storeagent
          1% softwareupdated
          1% fontd
          0% syslogd
    Top Processes by Memory:
      114 MB com.apple.WebKit.WebContent
      82 MB Safari
      49 MB com.apple.IconServicesAgent
      41 MB ocspd
      33 MB WindowServer
    Virtual Memory Information:
      1.82 GB Free RAM
      895 MB Active RAM
      275 MB Inactive RAM
      908 MB Wired RAM
      437 MB Page-ins
      2 MB Page-outs

    Try this:
    Boot into recovery (OPTION key down)  and select the recovery partition.
    From the 4 option menu select Disk Utility.
    Run Disk Utility>First Aid, Verify and Repair.
    If it says the disk cannot be repaired, replace it with a new HDD.
    If it says it is good, take out the disk, place it in an enclosure and connect it to the MBP via USB.
    If it boots the MBP, then the internal SATA cable is faulty and should be replaced.
    Ciao.

  • Macbook Pro (Late 2011) Won't read game

    My Macbook Pro (Late 2011) plays dvds (I used Family guy to test) but will not read the disk for Football Manager 2015 despite it being Mac compatible. THe disk itself runs on PC so isn't faulty. Any thoughts? 
    Processor  2.4 GHz Intel Core i5
    Memory  4 GB 1333 MHz DDR3
    Graphics  Intel HD Graphics 3000 384 MB
    Software  Mac OS X Lion 10.7.5 (11G63b)

    Thanks, OrangeMarlin.  Lots to learn about in land of the Macs.
    Point taken on the driver.  The reason I'm hesitant to assume it's power related is because everything else works.  Here is a short list of other devices I've used it for in the week or so I've owned this machine:
    iPad (connected fine and charged iPad to full)
    Seagate GoFlex (connects fine, but this device also uses wall power)
    Samsung Spinpoint HDD (in an aluminum Rosewill enclosure, also uses wall power)
    iPod Classic (fifth gen, 30GB), also charges
    Samsung Captivate (Android phone), charges
    I got this machine from the Apple store last week, when I swapped out my original purchase MBP due to a screen defect.  I asked them to run a gamet of tests to ensure everything OK, and they complied (at least claimed to).  I assume if I brought it back, with the drive, they would be able to test for a power issue, correct?
    Thanks again.

  • Help! MacBook Pro Late 2011 Not Charging

    My MacBook Pro Late 2011 is Not Charging. I have tried plugging it into multiple outlets and none have succeeded. He is a screenshot of my System Information>Power: http://grab.by/tkOM. I have no clue what happened. Last night we had a massive storm, but I don't believe there was any thunder or lightning. Whenever I plug the adapter into an outlet, the battery usage in the top right hand corner shows the "plugged in" icon, then it shows the "charging" icon. Then it just goes blank and back to normal. I have tried to restart it and do the SMC or whatever, but nothing seems to work. I have had this charger for a little bit over 1 year. Thanks in advance!
    - Sellers C.

    Hey Angelo_here,
    I'd run through these steps:
    If your computer won't turn on, try each of these steps:
    Verify you have a good connection from your Mac to the wall outlet by confirming the power cord and adapter if present are securely connected and plugged in. To check if the wall outlet is working, plug in a lamp or other electrical device.
    If the wall outlet is working and you continue to have no power try another power cord or adapter if available. If it works you may need a replacement cord or adapter.
    Note: See Apple Portables: Troubleshooting MagSafe adapters for further troubleshooting with MagSafe adapters.
    Disconnect all accessories that are plugged in to the computer, such as a printer, hub, or other mobile device.
    If your Mac supports user-installable memory, solid state drive, or hard drive, and you recently installed any of these, make sure they are installed correctly and are compatible with your computer. If possible, reinstall the original memory or drive into the computer to find out if the behavior persists afterwards.
    MacBook Pro: How to remove or install memory
    MacBook: How to remove or install memory
    Mac Pro: How to remove or install memory
    Mac mini: How to remove or install memory
    iMac (27-inch, Late 2012): Installing or replacing memory
    iMac: How to remove or install memory
    Reset the SMC.
    If you are still unable to start up your computer after trying each of these steps, visit an Apple Store or Apple Authorized Service Provider (AASP) for further diagnosis. If you plan to visit an Apple Retail Store, make a reservation at the Genius Bar using http://www.apple.com/retail/geniusbar/ (available in some countries only).Note: Diagnostic fees may apply for issues not covered under warranty or the AppleCare Protection Plan (APP).
    via: Troubleshooting: My computer won't turn on
    http://support.apple.com/kb/TS1367
    Welcome to Apple Support Communities!
    Regards,
    Delgadoh

  • Macbook Pro late 2011 not powering on. The charger shows a blinking dim orange/green light.

    Macbook Pro late 2011 not powering on. The charger shows a blinking dim orange/green light. I have tried pressing the small button on the side of the macbook pro to check the battery, but no lights show up.

    Hey Angelo_here,
    I'd run through these steps:
    If your computer won't turn on, try each of these steps:
    Verify you have a good connection from your Mac to the wall outlet by confirming the power cord and adapter if present are securely connected and plugged in. To check if the wall outlet is working, plug in a lamp or other electrical device.
    If the wall outlet is working and you continue to have no power try another power cord or adapter if available. If it works you may need a replacement cord or adapter.
    Note: See Apple Portables: Troubleshooting MagSafe adapters for further troubleshooting with MagSafe adapters.
    Disconnect all accessories that are plugged in to the computer, such as a printer, hub, or other mobile device.
    If your Mac supports user-installable memory, solid state drive, or hard drive, and you recently installed any of these, make sure they are installed correctly and are compatible with your computer. If possible, reinstall the original memory or drive into the computer to find out if the behavior persists afterwards.
    MacBook Pro: How to remove or install memory
    MacBook: How to remove or install memory
    Mac Pro: How to remove or install memory
    Mac mini: How to remove or install memory
    iMac (27-inch, Late 2012): Installing or replacing memory
    iMac: How to remove or install memory
    Reset the SMC.
    If you are still unable to start up your computer after trying each of these steps, visit an Apple Store or Apple Authorized Service Provider (AASP) for further diagnosis. If you plan to visit an Apple Retail Store, make a reservation at the Genius Bar using http://www.apple.com/retail/geniusbar/ (available in some countries only).Note: Diagnostic fees may apply for issues not covered under warranty or the AppleCare Protection Plan (APP).
    via: Troubleshooting: My computer won't turn on
    http://support.apple.com/kb/TS1367
    Welcome to Apple Support Communities!
    Regards,
    Delgadoh

  • Macbook Pro (Late-2011) Grey Cross during Install

    Hello.
    MacBook Pro (Late-2011) version. Just installed a new Intel 520 Series 480 GB SSD drive to replace the 750GB drive that was in it.
    Created a bootable USB Drive with Mountain Lion from the App Store (8GB SanDisk Ultra). When I try and boot from the drive, after about 45 seconds I get a grey crossout circle and it doesn't move from there.
    I've used the same method of creating a bootable install drive before when I did a fresh install on the same computer of Mountain Lion, and on my Mac Mini.
    So, is it the SSD that's causing the issue, or do I have a bad image?

    This problem is from a faulty restore of the installer to the USB thumb drive. Try fully repartitioning it with Disk Utility and then try the restoration again. To repartition, select the drive device in Disk Utility, and then use the Partition tab and select "1 Partition" from the drop-down menu. Then click "Options" and ensure GUID is the partition scheme. Apply the changes, and try restoring the installer to the drive again.

  • MacBook Pro late 2011 battery problem

    Hi everybody,
    My MacBook Pro late-2011 after I upgraded to Mac OS X Maverics the battery sometimes stop recharging, and whenever I click on the battery Icon it says,
    Battery is not recharging and that the power source is: power adapter, I tried resetting the System Management Conrtroller (SMC), by holding Shift-Control-Option and pwoer it worked and it recharged the battery, after 2 days the same problem appered and telling me that the battery is not recharging, any ideas
    Thanks in advance.

    Hi OGELTHORPE,
    I hate to hear it, but thanks.
    The MBP is late 2011 MacBookPro 8,2, the battery is as old as the computer, I bought it Jan 2012.
    Battery Information:
      Model Information:
      Serial Number:          D8*******MAX
      Manufacturer:          SMP
      Device Name:          bq20z451
      Pack Lot Code:          0
      PCB Lot Code:          0
      Firmware Version:          406
      Hardware Revision:          2
      Cell Revision:          157
      Charge Information:
      Charge Remaining (mAh):          4538
      Fully Charged:          Yes
      Charging:          No
      Full Charge Capacity (mAh):          4538
      Health Information:
      Cycle Count:          165
      Condition:          Service Battery
      Battery Installed:          Yes
      Amperage (mA):          0
      Voltage (mV):          12600
    System Power Settings:
      AC Power:
      System Sleep Timer (Minutes):          0
      Disk Sleep Timer (Minutes):          0
      Display Sleep Timer (Minutes):          15
      Wake on AC Change:          No
      Wake on Clamshell Open:          Yes
      Wake on LAN:          Yes
      Current Power Source:          Yes
      Display Sleep Uses Dim:          Yes
      GPUSwitch:          2
      PrioritizeNetworkReachabilityOverSleep:          0
      Standby Delay:          4200
      Standby Enabled:          0
      Battery Power:
      System Sleep Timer (Minutes):          0
      Disk Sleep Timer (Minutes):          0
      Display Sleep Timer (Minutes):          2
      Wake on AC Change:          No
      Wake on Clamshell Open:          Yes
      Display Sleep Uses Dim:          Yes
      GPUSwitch:          2
      Reduce Brightness:          Yes
      Standby Delay:          4200
      Standby Enabled:          0
    Hardware Configuration:
      UPS Installed:          No
    AC Charger Information:
      Connected:          Yes
      ID:          0x0100
      Wattage (W):          85
      Revision:          0x0000
      Family:          0x0085
      Serial Number:          0x*****a60
      Charging:          No
    <Edited by Host>

  • Macbook pro late 2011, 2560x1440@30hertz?

    Hello all,
    i am using a macbook pro late 2011,
    I have just purchase a new monitor of eizo2736w.
    After asking eizo support, they said their monitor can support to 2560x1440@60hertz.
    I wonder if it is my macbook pro problem, while it can only output to 2560x1440@30hertz..
    I have no problem in running 1920x1080@60hertz...
    Can anyone please tell me if the macbook pro with AMD Radeon HD 6750m can support to 2560x1440@60hertz?
    thanks.

    Hi, I have the same MB as yours and I also have the mini displayport dual link. When I switch from 1920x1080 to 2560x1440 I could not tell the difference. Is yours noticeably different when you switch your resolution?

  • I have a problem charging my iPhone 5 using USB on MacBook pro late 2011

    I have a USB charging problems with may MacBook pro late 2011!
    both USB ports can't charge my iPone 5 , but the USB ports work's with other devices.
    Please, help if some body have information about this issue

    Unfortunately the problem is not of such a nature, as mentioned ports operate with other devices.
    My iPhone is charging normaly when pluged in the socket.
    The cbel also is ok.

  • After upgrading to yosemite my macbook pro late 2011 does a random sound from time to time.

    After upgrading to yosemite my macbook pro late 2011 does a random sound from time to time. Its completely random and i already checked all apps in use and its not from them.

    Sounds like Notifications app.
    Maybe some other app. In SystemPreferences->Users&Groups->LoginItems tab: remove all entries with the minus sign underneath. This will not uninstall anything, you have to start those apps by hand now. Restart.
    Still there?
    Yes: Restart again while holding the shift key, this will start the mac in SafeMode: only the necessary items are loaded to run.
    Still there?
    Yes: Make an etrecheck list and post it here.
    No: Restart, put the items in the LoginItems back, one by one, restart after each entry, and you will find the "culprit"
    Please report accordingly. I will be back in 24 hours.

  • Both Internal hard drives fail on Macbook Pro late-2011

    Both internal hard drives (SSD and HDD) failed on Macbook Pro late-2011.
    Setup: MBP closed with Thunderbolt display attached.
    Problem on HDD-A
    I called Apple Support to log an issue with my MBP2011. The system is made up of 2 drives - SSD (128GB) and HDD with 2 partitions HDD-A and HDD-B(original 750GB).
    HDD-A has LionOSX 10.7 and HDD-B is storage. SSD has LionOSX on it as well. I normally boot HDD-A.
    I was working on HDD-A and the Kernel Panic screen appeared prompting me to shutdown the machine and start it up again.
    I tried to reboot HDD-A and the grey progress bar appeared for a long time. I then forced shutdown and rebooted into SSD.
    I was able to boot from SSD and then I opened Disk Utility to check the drives. I verified the disk for HDD-A and there was an error. I then tried to repair disk and it couldn't repair it. A dialogue said the disk could not be repaired and that data should be backed up.
    HDD-A was not visible in Finder but HDD-B was accessible.
    I verified HDD-B and it was "ok".
    I shutdown, booted from SSD, disk utility HDD-A and the same message occurred.
    I called Apple Support and they advised that I boot from my external HDD which was a clone of HDD-A.
    Solution
    I was successfully able to boot from the Clone HDD-A.
    HDD-A was able to be accessed and I could retrieve the files from HDD-A.
    I copied over the latest files from HDD-A to an external drive.
    Same Problem on SSD
    Boot from SSD, i started working for about 3 hours, with the lid closed, and attached to the ACD.
    Kernel Panic screen happened again on the SSD.
    Couldn't boot boot from either SSD or HDD-A.
    I booted from Cloned HDD-A, Disk Utility verify and repair returned errors on SSD. The same issue had occurred on the second drive.
    Disk Recovery from a boot recovery USB thumb, Disk Utility, erased SSD, verify was ok.
    Tried to install then there was an install error saying that SSD was damaged (large triangle warning icon). Tried 3 times, failed.
    Boot from Recovery Drive HDD-A, downloaded LionOSX.
    Next steps
    Format HDD-A and HDD-B into 2 partitions
    Install LionOSX on HDD A.
    Note:
    I did not do any software updates for about a week before 14.04.2012 and suspect it might be due to the virus.
    I normally work with the lid closed and attached to the ACD, I also suspect that overheating caused both drives to fail. However, I have been using this system with the lid closed for atleast a week. One Kernel Panic screen occured.

    Depending on what you are doing on the computer, how hard you are working the computer, it should not overheat. And if it does it should shut down or get very slow because when it starts to overheat the CPU will be throttled back to a lower Ghz speed and or just shut down so it doesn't cause damage to the CPU. The Kernel Panics are a sign that something else is going on. This could be software or hardware.
    If after wiping the drives and reinstall Lion on the SSD if the system is running OK then the drives are fine, IE they are not bad. There is something else corrupting them. Again this could be hardware or software, but I doubt it is heat. And using the MBP ion clamshell mode should not cause overheating or excessive heating of either of the drives.
    Have you installed iStat Pro or Menu and kept and eye on the temps? If not install iStat Pro and keep and eye on the temps. I bet they do not get above the 150°- 180°F mark which although hot is not overheating.
    Be very careful when calling Apple. Removing the DVD drive and installing a hard drive in that bay could void your warranty. The DVD is not a User Removable part and Apple frowns on doing that. So if you call them do not mention that you have replaced the DVD drive with another HDD.
    Honestly I suspect you have a hardware problem. But the only way to know that is to install just Lion and your basic programs and run the system. Leave out any AV type software, if you are running some. If you don't get any kernel panics thenn install some of your other software, one programm at a time. If with just the OS and basic software you get a kernel panic then it is hardware related and needs to be checked out by Apple. If you do that re-install the DVD and the original HDD with just the OS on it before you take it in.

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