HT3964 responding to presses of the power button

The power button does not respond.  I did a hard reboot because the mouse was not recognized. The computer will no longer turn on.

Try smc reset (pull plug, wait 15 secs., plug back in, wait 5 more seconds) and then hope for the best.

Similar Messages

  • My macbook doesn't work. After pressing down the power button I hear the sound from starting the apple symbol appears and after a while a sign prohibited appears on the place of the apple symbol

    My macbook doesn't work. After pressing down the power button I hear the sound from starting the apple symbol appears and after a while a sign prohibited appears on the place of the apple symbol

    Hi Kappy Thanks for your answer. I did a reboot on my Macbook as suggested and this operation is going on non stop for 14 hours and on the screen always appears the same message that you can see in the picture in attachment. Any ideas?

  • TS3694 Why does my ipod keeps powering off, and when I turned if on, I have to press down the power button and the screen button at the same time ???

    Why does my ipod keeps powering off, when I have to turn it on ... I have to press on the power button and the screen button at the same time ??? over and over again. I just got this in December 2011 as a gift.

    I am having similar 'freezing' problems with many programs (Mail, Safari, iTunes, etc.). I have done a clean install of Lion instead of an upgrade when it came out. Perhaps something went wrong with my install? I'm thinking about wiping and reinstalling.

  • My macbook pro will not start after pressing the power button

    I have bought a macbook pro last year and now, I have a great problem since a few months.
    My macbook does not boot up, I hear no fan noices and no LED lights are blinking...
    Battey is full, but nothing happens (means system will not start up).
    I have also tried to start with the Power button - but the similar effect "NOTHING HAPENS".
    What I don't understand is, if I do nothing for one or two days and press then the power button, the system will start up and full functionality for a few days.
    And anytime I get the same problem again... and must wait also for a few days.
    Can anybody support me please.
    Thank you all in advance and looking forward to a fast reply.

    Try reseting SMU as suggested in link below
    http://support.apple.com/kb/ht3964
    Allan

  • Why does Satellite Pro A300 not start when the power button is pressed?

    Suddenly my new Satellite Pro A300 will not start correctly when the power button is pressed. The situation is this: When I press the power button the Toshiba opening picture (Leading Innovation) appears and disappers quickly. Then there is a black screen for about 30 seconds. Then there is a rectangular frame with the text Microsoft Corporation underneath. And nothing happens however long I wait.
    In order to get on with the starting proces I then shut down the computer by pressing down the power button until the computer stops. ("The hard way to shut down")
    Now I press the power button shortly to turn on the computer. Then the computer starts normally with the Toshiba opening picture and after a few seconds I am asked to open the computer in safe mode or in normal mode. I now choose to open in normal mode and the computer opens normally and is ready to work.
    What shall I do to get a normal start procedure?

    When notebook starts normally (after choosing normal mode) shut down your notebook properly using START > Shut down option. Next start should be normal.
    When the OS is switched down on irregular way you will be always asked how to start it again (safe or normal mode).
    The same happen on my Satellite A300.

  • Adding "reboot" to the power button

    Is it possible to add a "reboot" button to the menu which shows up by long pressing on the power button? I've find out some widgets only for that purpose.
    Xperia mini, rooted, ICS 4.0.4

    You can use the mod you linked
    I have installed similar on my phone too :smileywink: works fine
    Discussion guidelines.
    Message me or any other moderator to seek help regarding moderation.

  • HT3964 My MacBook is not responding when I press the power button, does anyone know how to fix this? Thank you :)

    Hi, when I press the power button on my MacBook nothing happens and it is driving me crazy If anyone knows how I can fix this problem, I will appretiate it very much
    Thank you

    Try an SMC reset, which can often fix that:  http://support.apple.com/kb/HT3964 . Note as you scroll down, there are two sets of directions for MacBooks, depending on whether you can remove the battery or not.

  • My iphone's screen goes black and it behaves like that it is switched off.No switches work and the power button also does not respond.The ringtone do not also respond.The only way to switch on the phone is to press  home button and  power button together.

    My iphone's screen goes black and it behaves like that it is switched off.No switches work and the power button also does not respond.The ringtone do not also respond.The only way to switch on the phone is to press  home button and  power button together.

    Pressing the Home button and the sleep/wake or on/off button together until you see the Apple logo and then release is called a reset.
    If no change after a reset, the next step is restoring your iPhone.

  • TS3274 MY IPAD screen is unresponsive. I tried to reset by pressing the power button for a long a few seconds but it is not responding either.

    MY IPAD screen is unresponsive. I tried to reset by pressing the power button for a long a few seconds but it is not responding either.

    Try reset iPad
    Hold down the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears
    Note: Data will not be affected.

  • My iPhone 4 won't switch off. When I press the power button at the top, the phone doesn't respond. Please help!

    My iPhone 4 won't switch off. When I press the power button at the top, the phone doesn't respond. Please help!

    Try a reset

  • HT3964 My Macbook Pro did not respond to the power button, and I ended up resetting the smc.  After that, it would start, but the keyboard  would not respond, pnly the trackpad.  On the screen there is a symbol with ahorizontal white bar and a row of empt

    After resetting the SMC the keyboard is inoperative.  On the start screen appears a traslucent square with a horizontal bar in white, and a row of empty dots below (the same format as for example the brightness symbol).  I cannot turn the Mac off with the power button, only with the trackpad, clicking on the turn off symbol on the screen. 
    When I try to login with my username, no characters appear as I type.
    I can login as a guest, but from there I can do nothing, because the keyboard is still inop and if I wanted to, for example, have the software updated, I need to type an admin login, which is impossible.
    Thanks for your help

    What happens if you close the lid? Sleep?
    In your place I would use sleep state to reset PRAM, as it can resolve your graphical mess.
    Your keyboard likely was not powered after SMC/PRAM failure, so you will need to open MBP cover without opening the lid and disconnect battery power cable with insulated tools from logic board, wait for 5-10 minutes, then try to reset PRAM while keeping cover

  • My MacBook Pro's screen just started randomly going blank, sometimes white sometimes black, and I won't be able to do anything no matter what key I press unless I restart it via the power button and even then I have a few minutes before it happens again

    MacBook Pro's screen randomly goes blank (white sometimes dark), wont be able to do anything no matter what key i press unless i turn it off and on via the power button. When i do that I normally have just a few minutes before it happens again. Bought this back in december just started happening a few days ago. Only thing out of the ordinary I've done is install that microsoft silverlight or whatever it is netflix asked me to install to watch the videos but I uninstalled that quickly hoping it would fix my problem but it hasn't so please help me out if you know what to do

    Try a SMC reset:
    http://support.apple.com/kb/ht3964
    Ciao.

  • HT1446 My Mac book pro black out just so, and the charger show a blinking light after I pressed the power button (green to yellow)

    My Mac book pro black out just so, and the charger show a blinking light after I pressed the power button (green to yellow)

    2. Reset SMC.     http://support.apple.com/kb/HT3964
        Choose the method for:
        "Resetting SMC on portables with a battery you should not remove on your own".

  • My ipod touch 5th gen. 16gb ios 8.1.2 wont turn on, i press the power button and nothing happens, and my home button doesnt work, PLEASE HELP ME OUT!!!

    My ipod touch 5th gen. 16gb ios 8.1.2 wont turn on, i press the power button and nothing happens, and my home button doesnt work, PLEASE HELP ME OUT!!!

    Try:                                               
    - iOS: Not responding or does not turn on           
    - Also try DFU mode after try recovery mode
    How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
    - If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
    - Try another cable                     
    - Try on another computer                                                       
    - If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
    Apple Retail Store - Genius Bar                                     

  • My ipod has a blank white screen. I have tried pressing home and power button at same time and a restore and its still the same. Can anyone help please

    Can anyone help me please? My ipod has a white screen that i cant get rid off. I have tried pressing home and power button at same time. I have tried a restore from itunes and its still the same. I cant even turn it off. Please someone help me.

    Try:
    - iOS: Not responding or does not turn on
    - Also try DFU mode after try recovery mode
    How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
    - If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
    - Try on another computer                            
    - If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
    Apple Retail Store - Genius Bar                                     

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