MBP 12 - hangs at startup and the screen Glitch

Hello!

My good-condition, end 2012, 15 "MacBook Pro under OS X 10.11.4 is ill. There are two apparently distinct questions:

  • When starting, it does not get passed to Midway as indicated by the gray bar. It crashes and gives the time, periodically warms and turns fans.
  • From the start, the screen has a distinctive glitch superimposed on it that never changes or falters: a series of horizontal blue lines on each fourth-or-so row of pixels.

The problem started by wakes the MacBook to sleep and it gel. Eventually had to hard - reboot, and now here we are.

I tried:

  • Start in Recovery Mode: (now ⌘R to the boot) hangs on white screen directly after the Apple-logo-and-progress bar screen, not a lot of help.
  • The PRAM reset: (now ⌥⌘PR) unfortunately has no effect.
  • Start in Verbatim mode: (now ⌘V) Always crashes, but it could provide a few tips:

In the image above, you can see the above glitch, the blue lines. (Non-glitchin boot Verbatim is just white on black).

If in any sense, the last printed line is always this:

en2: promiscuous mode enable succeeded

More information:

The reason why the boot in Recovery mode does not work maybe because there is no recovery disk partition. When you start while the possibility to select the startup disk, there are only two options: Macintosh HD and BOOTCAMP. Recovery disc or something similar is also meant to appear?

Tags: Notebooks

Similar Questions

  • XP hangs at startup and the dialog box provides the following: a problem has prevented Windows to check exactly the State of this computer

    I am rebuilding a system that has been attacked by several viruses and had to rebuild XP using the Windows installation disc.  After completing the repair, I was greeted by the XP logon screen and I tried to log in as administrator. The standard screen grass-hill appears followed by a Windows dialog box to activate product indicating "a problem has prevented windows to check exactly the State of this computer.  To keep your copy of windows must be activated with Microsoft. You want to activate Windows now? "If I choose 'No', then Windows drives me back to the login screen.  If I choose "Yes" then Windows does nothing - activation does not occur and XP does not start... the system just hangs.   I also tried to open a session without failure, but he said that I could not activate safe mode and started back me to the login screen.  I am able to get to a command prompt, if I select Mode safe mode with prompt at startup.  FYI, I am able to view the structure of this version XP Directory when I configure the HARD disk as a slave on another system drive.  Any help to resolve this matter will be highly appreciated.

    I have exactly the same problem and after 2 days of searching and trying stuff found on the internet, I have solved this problem.

    At my computer configuration: Windows XP sp3 with IExplorer 8, but had to go back to the repair facility after that some system files have been corrupted, do not know why.
    My repair CD installation was: Windows XP sp2

    In my view, the main problem is that after the installation of repair, the system obtained in conflict of existing versions of IExplorer 7 and 8. IE 7 & 8A prevented the application of activation of MS (OOBE) of working after the installation of repair, the OOBE application silently chrashed and prevented the logon process.

    I couldn't connect even in safe mode, BUT with failure + command prompt, safe mode I managed to log on! So, choose the mode without failure + command promt in the trunk. Then open a session with success. Then close the command prompt and press CTRL + ALT + DEL to Task Manager. In task manager launches the new application "c:" and answer 'No' to the following question, and after an error message you c: drive open and you'll have office. You can close the System Restore Wizard who opened. Then go to c:\windows\ie7\spuninst and run spuninst.exe. Do the same to c:\windows\ie8\spuninst. After you have uninstalled both, restart windows, and after the first issue of activation, you should get the big activation dialog box.

    I have spent a lot more time, because I was told that uninstall IE7 and IE8 is possible to do this via the command prompt. I did, but it has not fixed my problem. Then I tried a thousand other tricks at the same time.

    Please let us now if this helped you.

  • Adobe CS5 first hangs at startup and cannot be updated

    My Premiere pro CS5 hangs at startup and I tried to update, but it says "inapplicable" and will not allow not update...

    I tried to uninstall as well but still does not work...

    OK problem solved.

    It was an audio plugin that was the way for a reason any (.vst)

  • IPhone 6 continues to go to the turning off of the screen and the screen where I enter my access code.

    IPhone 6 continues to go to the turning off of the screen and the screen where I enter my access code to return. I hit Cancel on the stop screen or type my password the password screen and it goes back to the screen, I was on. I did a reset, all settings, but not him erase all content and settings. I went all day without any problems and an ago he started to panic. I took the cover of a few days ago thinking it might be the cause of the problem by pressing the power button, that wasn't the problem. Can someone give me some advice on what could be the problem?

    I have not updated my phone to the new IOS

  • My daughter Air2 IPad takes too long to save. It is connected to wifi, connected and the screen is locked.mAny advice?

    My daughter Air2 IPad takes too long to save. It is plugged in, connected to wifi and the screen is locked. Any tips?

    How long is too long? If it lasts for more than a few hours - and even that is too long in my humble OPINION - then something is wrong. Completely backup, because it will not terminate in any case if its been so long, forced to reboot the device and try again.

    To force the reboot your device, press and hold the two buttons of sleep/wake and home for at least ten seconds, until you see the Apple logo.

    This may not work either. The backup may be damaged and you will need to remove and start over. However, its easy starting point and it will not hurt anything. If the backup will not end, he has nothing to lose.

  • Arm, wrist and the screen does not light.

    I just wanted to give a few comments. When I walk, carry heavy bags and I want to watch the time I lift my arm to look at my Apple Watch and the screen does not light. Maybe its because the movement of the arm is subtle, since I am carrying heavy bags. I was wondering if that could be repaired since both times I tried it, annoyed me. Walk in a street busy NYC with my groceries, I would like to know something, briefly, on my watch as I walk with the duty to stop or to disembark the bags.

    Hello

    It is a community of support based on the user.

    To make sure that your comments and suggestion are presented to the attention of Apple, you can submit the following form (all comments are read by Apple):

    https://www.Apple.com/feedback/watch.html

  • Satellite L405D-11V - freezes and the screen goes black when you watch the video

    OK, so I have the Toshiba Satellite L405D-11V, I had a breakdown, basically, the computer freezes at any time and the screen would go black, with the fan and lights still ongoing, this could be at the start, or a few hours using the laptop, so I decided to ring Toshiba technology support and they arranged for my laptop to collect and be expelled for repairs.

    I was able to track repairs online via the tracking service and was able to see what they were doing to my laptop, he said that they have ordered a part, it was underway and the repairs are completed.

    However, I got the laptop back today, I turn it on, all right, I start using the cell phone that everything is fine, so I decide to watch a video on youtube, and it freezes again, so I turned off now pressed the power button, hoping he wasn't that a large, I turn back to and load the video once again it freezes and the screen goes black again, after that whenever I am watching a video or a game, it causes the computer to crash and freeze as before the repairs. So there is always a mistake, but I'm not sure what to do

    Its still under warranty, I bought the laptop from the Comet, but I really don't want to send the laptop for repairs again and find it comes back with the same fault, is it interesting sending distributed, maybe see if the comet will replace the laptop as its still less than a year to buy the laptop, or it'll just be useful to save all the hassle and buy a new laptop? If this fault happened to someone else, I could use you some help, and if someone could shed some light regarding what could be bad?

    Thank you

    Hey Buddy,

    You changed something on the configuration after you got your notebook back from repair? You update a driver, or something else?
    What operating system you use on your L405D satellite?

    To be honest it is really hard to say why it happens because technicians test to check if your laptop is running correctly.

    In my opinion you should try to update the display driver. Maybe it's the origin of the problem of s
    If this isn't the case, I recommend installing Windows from Toshiba Recovery disk to restore to factory settings. These parameters are pre-tested by Toshiba and should work.

    If you still have the problem, you must contact the technicians again. I mean you could track the online repair and according to your assignment, everything worked well during repair, so in my opinion he should t be a problem to contact guys exactly.
    Explain your very detailed problem. I think that everything can be clarified then. :)

  • Equium A20 fell and the screen turns off always

    Hi, I was using my satellite A20 long (4 years). Never had any problems. Recently he fell and the screen turns off always.

    I can see the toshiba logo and the windows logo also when starting, and even I can enter the BIOS and change the boot order too... but as soon as windows load screen is black. I don't understand

    Anyone with the solution?

    Thanks in advance...

    Hello

    > but as soon as windows load screen is black. I can t understand
    This means that the display output has accidentally changed to an external.

    Have you checked if something would be visible on the second external monitor?
    Select this check box.

    In addition I advise to use the FN + F5 keys to check if you can switch the output back to the internal display.

  • Satellite Pro L300-21F does not start and the screen remains blank

    L300-21F is aged 18 months, so out of warranty. When you press the power button, you can hear the fan and a "click" but the hard drive does not start and the screen remains blank. The power and the battery on the headlight LEDs, but the switch light does not work. I checked the power supply and it is 19.3V and substituted a good known. Removed the battery, tried with just the power cord and still nothing. Pressing ESC or F2 when you press the button power does not bring to the top of the screen of the bios or any other message. I have concluded there is no power the jury. A friend he had its technology take a look and he concluded Council is probably a friend.

    So my questions are:
    1. He's probably right?
    2. is it a common problem with an easy solution?
    3. what else can do before shelling out for a new Board of Directors?
    4. is there a link where I can find how to disassemble the case?

    Any help appreciated

    Hello

    > 1. He's probably right?

    Yes, it looks like motherboard failure

    > 2. Is this a common problem with an easy solution?

    If it's a motherboard problem, the whole motherboard is replaced. Quite expensive part...

    > 3. What else can do before shelling out for a new Board of Directors?

    I don't think you can do anything with fried mobo

    > 4. Is there a link where I can find how to disassemble the case?

    Take a look at the site called irisvista.com

  • Satellite Pro 6000 freezes and the screen is weird random pattern

    Hello

    I recently bought a SP6000 second-hand advertised as having "graphics problems". After 10 minutes or use the laptop freezes and the screen has a strange random pattern all acorss it. The speakers are also a strange hum. I have to stop the laptop and restart.

    I've updated the bios and drivers for card video from the toshiba site, but he always does. Can anyone help?

    Hello

    It's not easy to say why this problem occurs. You have purchased a second hand unit. It is possible that your device has a hardware malfunction, but I can't give you an answer why it is happening. I suppose that temperature increases after 10 min of use.
    Maybe this could be a problem. It could also be a fault of the motherboard. But these are just suggestions. In my opinion, you should ask the service for detailed information.

  • Trying to iCloud iPhone backup 6 + and tried to 'Cancel backup' now the wheels are turning and the screen is frozen. How can I stop?

    Looking for a backup initiated from my iPhone 6 s +.  Needed to leave before it's over, so I typed "cancel backup' which doesn't seem to work.  Six hours later the wheels always turn around. Message on the screen said "Turning on Backup" - it turns also around and the screen seems frozen I can't return to set after I selected "iCloud" How can I fix it?

    Have you tried to restart the phone.

  • Re: NB200 - making noise and the screen turns white

    Hello

    My laptop makes the high pitched noise and the screen turns white. Please help with this question.

    Thank you

    Hello

    It is especially as this problem with the inverter. She is, die, and made a noise of pitch. Try to connect the external monitor and check if it is displayed.

    Welcome them

  • the iPad beeps and the screen blinks when it is plugged

    DIIAP keeps a sound signal and the screen flashes when I plug

    Hello

    Need more information plug in what sector / pc?

    See you soon

    Brian

  • just got a new lenovo y50 and the screen does not come

    Hello.. I had a y50 lenovo a day ago. I loaded and when I turned it on the custom screen shows something... it won't turn... Only the lights on the keyboard upwards
    Thank you

    thx for your help... .but I guessed it was a connection problem... so when I opened, I find that the cable between the motherboard and the screen was loose... then it worked, I saw the language and region settings

  • My HP envy does not stop and the screen is black

    I tried to restart my laptop but it will not turn off and the screen is black. Help, I don't know what to do!

    Hey Raacbell,

    The ENVY Ultrabook series has a built in battery which can not be easily removed without disassembly.

    If you need to replace the battery due to regular wear of the Lithium-Ion battery on the road, you can see how to replace from page 35 here: HP Envy 4 - Maintenance and Service of Guide.

    Thank you!

Maybe you are looking for