Press Power button can't start mac

After clean install mountain lion reboot fine. But just now app store flag the need to update EFI. After update and reboot, hear a sound but black screen. Hold down power button for long time or just press does nothing. Please help.
If it is an issue, rather reinstall snow leopard. Waste of time and now lost of my MacBook pro :-(

Suddenly holding power for long time and alt start it again. No sure if alt key play a part but at least now works. ... Cold sweat :-0

Similar Messages

  • No power button, can i start it another way?

    I have a hp pavilion dv6000 the power button tore up 6 months after i bought it and i fooled around untill it was out of warrenty before i called about it because i could turn it off and on with the quick play buttons, the other day my son accidently put in hibernation and now the quick play buttons dont work either. Is there any way I can get it on I can follow directions pretty well and i have had it apart several times. If I can get it back on I will leave it on i have left in on since I got it about 2 years ago. Thank You in advance for any help

    You can search within your music folder on your pc, or within documents folder for a music folder.
    In any case, you would need to sync with itunes
    IOS: Syncing with iTunes
    http://support.apple.com/kb/HT1386
    Apple - Support - iPad - Syncing
    http://www.apple.com/support/ipad/syncing/
    If the music was purchased from the itunes store, you can also download it directly from there to the ipad.

  • My new mac mini with Maverick does not go to deep sleep even if i press power button or Apple-Sleep mode.

    Hi.
    I have my new mac mini with Maverick that does not go to deep sleep even if i press power button or menu Apple-Sleep mode. He goes only to something like stand-by  (power lid is on; after i turn off and then turn on the power he does not wake up just starting). I tried "sudo pmset -a hibernatemode X", tried mode 0,1,3, and even 25. nothing helps. he goes to deep sleep (when all data on HDD) only first time after i change hibernatemode couple times and force it to sleep. Today i even tried to force it to sleep (menu Apple-Sleep mode) and NOT turn off the power for whole night, in the morning he is in this "stand-by" mode anyway.
    Could anyone help me please? i need it sleep but don't want to keep my power on for whole night.

    The warranty entitles you to complimentary phone support for the first 90 days of ownership.
    If you bought the product in the U.S. directly from Apple (not from a reseller), you have 14 days from the date of delivery in which to exchange or return it for a refund. In other countries, the return policy may be different. If you bought from a reseller, its return policy applies.

  • When i press power button i hear several click sounds before start up?

    When I press power button I hear several click sounds before start up begins. Shortly after Apple logo appears it clicks off.

    Which MacBook Pro do you have? If it has an optical drive then that is just the optical drive checking if there is a disk inserted.

  • PC does not start when pressing the power button, After that starts automatically like a ghost!

    I have HP Pavilion a6030in, My pc does not start when i press ther power button, but it starts after sometime automatically after that it works fine.
    Again when i shutdown and leave it for sometime, and still the problem is unsolved.
    Please Help
    This question was solved.
    View Solution.

    he figured out you dont just shut the lid and walk away, you use Windows shutdown
    click Kudos to say thanks if I helped

  • Hi, ı have a problem once I push the power button and it starts to opening but small symbol turning and turning, it really lasts so long. could you please help me? is it so slow to open a mac pro.

    Hi, ı have a problem once I push the power button and it starts to opening but small symbol turning and turning, it really lasts so long. could you please help me? is it so slow to open a mac pro.

    OS X Version Number?
    Repair Disk
    Steps 2 through 8
    http://support.apple.com/kb/PH5836

  • Mac Mini repeatedly getting "Press power button and restart your computer"

    I keeping getting the following message coming up on my Mac Mini "Press power button and restart your computer". I have a G4 Mac mini and it boots up fine and runs ok for about 10 mins however after that time (if left) the message comes up. I restart the machine and the same thing happens again.

    Isolate the cause as my FAQ suggests. Backup, or recover your data first*
    http://www.macmaps.com/backup.html
    and then discover if the issue is hardware, a directory, or software.

  • MacBookPro 15.4 keep freezing up with black dialog box to press power button until off and restart

    MacBookPro15.4 less than a year old keep freezing/locking with black dialog box to press power button until off and restart THEN repeat successive times after restarting it?

    If you're able to boot, launch the Console 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 Console in the page that opens.
    Select the most recent panic log under System Diagnostic Reports. Post the contents – the text, please, not a screenshot. For privacy’s sake, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header and body of the report, if it’s present (it may not be.) Please don't post "shutdownStall" or "hang" reports.
    If you can't boot in the usual way, try a safe boot. The instructions provided by Apple are as follows:
    Be sure your Mac is shut down.
    Press the power button.
    Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
    Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
    During startup, you’ll see a progress bar, and then the login screen, which appears even if you normally log in 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.
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  • NB205 - Blank screen if I press power button

    Hello,
    I have problem with my NB205 bl-325, that if I press power button then it will load TOSHIBA logo and after that comes blank screen and it wont start to boot. Everything was okay if i used it last time.
    OS: Windows 7 Ultimate
    What I tried?
    I gathered some information about that issue, and I found that sometimes helps if I remove battery and remove RAM. And if I have been removed ram, then I will give some electritvy on it, but this didnt helped. (maybe i missed some part)? Also i checked from my BIOS that primary boot is my Harddrive.
    My problem looks same like in that video http://www.youtube.com/watch?v=LCm6BozBgAM&feature=related
    Does anyone have any suggestions about that?
    regards, Olari
    Message was edited by: Olari

    Hi buddy,
    That means you need professional help from an authorized service provider because its a hardware malfunction and the guys must check your notebook.
    You can find a list of all authorized service providers on the official Toshiba website. So just get in contact with the guys and ask for help.
    Good luck! :)

  • I have a ipod nano shuffle, 6th gen.  I bought it when I had Windows Vista.  I upgraded to Windows Ultimate 7.  Now it keeps shutting off.  Have to press power button and touch arrow to restart.  3 to 4 times a song.  I ran diagnostics.  Passed until end.

    Have iPod Nano Shuffle 6th Gen.  I purchased it when I had Windows Vista.  I have since upgraded to Windows 7 Ultimate .  Was fine with Vista.  Now, it keeps shutting off during the song, 3 or 4 times.  Have to press power button and then arrow to restart song.  I went to my iTunes and ran diagnostics.  Passed all until the end.  The last test had a red dot failure.  It said no iPod, iPhone, or iPad found.  Does someone know how I can correct the problem?  iTunes is always updating, so I am current.

    Sidney...
    Try here >  iPod shuffle troubleshooting and service FAQ

  • Recently having problem with flickering on monitor (viewsonic vg2436wm).  When coming out of sleep mode.  The screen goes gray, sometime out.  Have to press power button to get screen on.  Problem stops.

    Recently having problem with flickering on monitor (viewsonic vg2436wm).  When coming out of sleep mode.  It will flicker, the screen goes gray, sometime out.  Have to press power button to get screen on.  Problem stops.  Getting more frequent.  After sometime problem stops. My system is a Mac Mini 2010, 2.4 intel core 2 duo, 2 GB, running OSX10.8.5

    See if it's related to this...
    The 2012 macs (and later apparently) not waking normally from sleep after hours being in sleep. (noted here ...
    http://www.xlr8yourmac.com/archives/feb13/022813.html#2012macswontwake
    "Why 2012 iMac/2012 Mac Mini won't Wake After Hours of Sleep (Hibernates/Powers Off)")
    The sleepimage file still reappears even if never slept. Delete it (hibernate off, etc) - within minutes its back.
    A note on that here - http://www.xlr8yourmac.com/feedback/Chameleon_SSD_Optimizer.html
    About iMac sleep...
    http://forums.macrumors.com/showthread.php?t=1529750
    Try this: "sudo pmset autopoweroff 0" and "sudo pmset standby 0"
    http://xlr8yourmac.com/archives/sep13/091313.html#10.8.5SleepEjectTip

  • Macbook pro not opening when press power button

    my mac book pro not opening when press power button even battery is full.

    I already tried with the Battery in and without but no luck. I'm sure it's not that kind of problem unfortunally

  • Long press power-button shutdown

    Does Long press power button shutdown posses any harm on laptop?

    Yes, It�??s Okay to Shut Down Your Computer With the Power Button
    (Short Press but not a Long Press of the Power Button)
    http://www.howtogeek.com/181295/yes-its-okay-to-shut-down-your-computer-with-the-power-button/
    Merv Porter
    =========================

  • Why Apple doesn't provide options in IOS to power off, reset, standby ipad/iPhone/ipod ? I don't se this opiton in IOS6 as well ? This option will help to avoid pressing power button less number of times and gives better user experience.

    Why Apple doesn't provide options in IOS to power off, reset, standby ipad/iPhone/ipod ? I don't se this opiton in IOS6 as well ? This option will help to avoid pressing power button less number of times and gives better user experience.

    They do.
    Standby = press the Power button
    Power off = Press and hold Power button then slide the red power off slider.
    Reset = Press and hold both Reset adn Home till you see the Apple logo.
    This option will help to avoid pressing power button less number of times and gives better user experience.
    Because it is better to not push the power button and more enjoyable to not push it?

  • Everytime I start up my Mac mini I'll be able to use it only for a little while then the beach ball appears and it won't let me do anything I have to keep forcing it to turn off by holding the power button can someone help me?

    I have no external devices connected to my Mac mini but still everytime I use it after about half hour to an hour in whatever I'm using wether it's the Internet or iPhoto or iTunes the beach ball appears and I cannot get it to stop I always have to press and hold the power button and force it to switch off I then do a safe reboot and it starts up again fine but same thing again after a certain amount of time it will freeze. I have also had on some occasions a bright white screen with a folder and a flashing question mark appear but it's not because of any external devices as they have all been removed please can someone help me as I have no idea why this keeps happening to my computer and I'm worried that there's something seriously wrong it's only about 6 months old and I have no experience in dealing with computers ??

    EtreCheck version: 2.1.8 (121)
    Report generated 13 February 2015 15:33:46 GMT
    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
        Mac mini (Late 2012) (Technical Specifications)
        Mac mini - model: Macmini6,1
        1 2.5 GHz Intel Core i5 CPU: 2-core
        4 GB RAM Upgradeable
            BANK 0/DIMM0
                2 GB DDR3 1600 MHz ok
            BANK 1/DIMM0
                2 GB DDR3 1600 MHz ok
        Bluetooth: Good - Handoff/Airdrop2 supported
        Wireless:  en1: 802.11 a/b/g/n
    Video Information: ℹ️
        Intel HD Graphics 4000
            LG TV spdisplays_1080p
    System Software: ℹ️
        OS X 10.10.2 (14C109) - Time since boot: 0:11:35
    Disk Information: ℹ️
        APPLE HDD ST500LM012 disk0 : (500.11 GB)
            EFI (disk0s1) <not mounted> : 210 MB
            Macintosh HD (disk0s2) / : 499.25 GB (398.54 GB free)
            Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB
    USB Information: ℹ️
        Apple Inc. BRCM20702 Hub
            Apple Inc. Bluetooth USB Host Controller
        Apple, Inc. IR Receiver
    Thunderbolt Information: ℹ️
        Apple Inc. thunderbolt_bus
    Configuration files: ℹ️
        /etc/sysctl.conf - Exists
    Gatekeeper: ℹ️
        Mac App Store and identified developers
    Kernel Extensions: ℹ️
            /Applications/AVG AntiVirus.app
        [loaded]    com.avg.Antivirus.OnAccess.kext (2015.0 - SDK 10.8) [Click for support]
    Launch Agents: ℹ️
        [running]    com.avg.Antivirus.gui.plist [Click for support]
    Launch Daemons: ℹ️
        [loaded]    com.adobe.fpsaud.plist [Click for support]
        [running]    com.avg.Antivirus.infosd.plist [Click for support]
        [running]    com.avg.Antivirus.services.plist [Click for support]
    User Login Items: ℹ️
        iTunesHelper    Application  (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
    Internet Plug-ins: ℹ️
        Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Click for support]
        FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]
        Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]
        QuickTime Plugin: Version: 7.7.3
        Default Browser: Version: 600 - SDK 10.10
    3rd Party Preference Panes: ℹ️
        Flash Player  [Click for support]
    Time Machine: ℹ️
        Time Machine not configured!
    Top Processes by CPU: ℹ️
             5%    WindowServer
             1%    AVG
             0%    AppleSpell
             0%    fontd
             0%    cloudpaird
    Top Processes by Memory: ℹ️
        215 MB    com.apple.WebKit.WebContent
        125 MB    avgd
        107 MB    Safari
        90 MB    Messages
        69 MB    WindowServer
    Virtual Memory Information: ℹ️
        171 MB    Free RAM
        1.68 GB    Active RAM
        1.53 GB    Inactive RAM
        637 MB    Wired RAM
        1.34 GB    Page-ins
        2 MB    Page-outs
    Diagnostics Information: ℹ️
        Feb 13, 2015, 03:20:28 PM    Self test - passed
        Feb 6, 2015, 08:08:07 PM    /Library/Logs/DiagnosticReports/Kernel_2015-02-06-200807_[redacted].panic [Click for details]

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