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My Macbook pro keeps shutting down right after ...

I have had my Macbook Pro since 2011 and it has been great until now. Suddenly, I can no longer get past the grey screen just after I log in. The grey screen appears with a loading bar, and the bar get 1/4 of the way complete, then the computer shuts off. My power cord seems to be working fine because this problem still occurred after using another power cord (from another Macbook). Keyboard does not light up, and the small green lights on the left side of the computer do not light up (this is an older version and these light indicate how charged the computer is). It is using the OS X Yosemite and recently had total clearing of the hard drive as it was transferring from one owner to another, so the hard drive isn't nearly full enough to be causing this problem. I've never run into this problem before with other Macbooks.

Help!

Try a Safe Boot OS X: What is Safe Boot, Safe Mode? - Apple Support

Also see the tips here Mac OS X: Gray screen appears during startup - Apple Support

Hi  If mike's post does not work try single user mode. https://support.apple.com/en-us/HT203176 Or boot to restore partition by holding down /Command/Option or /command/Option/R while rebooting and use disk utilities to repair permissions or startup disk. If you have to you can reinstall from this partition. Back up your drive if you can. Doing a restore does not usually remove any files or settings you installed ,as it only reinstalls the operating system.

Thanks Mike and my ginger, but neither of these methods worked unfortunately.

Mike: I tried the Safe Boot 3 times, and the computer never acknowledged it as a Safe Boot. Strangely, it is starting and shutting down much more quickly than usual.

my ginger: I was able to get to the Utilities window when holding down Command+R and tried repairing permissions and then tried reinstalling the OS X. Repairing permissions didn't help and in the process of reinstalling OS X, twice I got an error saying that there was something wrong with the installation and that I must try again.

I'm stumped.

Hi. When you were in the recovery drive doing permissions, did you try and run a repair of the boot drive? Did you try single user mode? Try these first and then go back and try to reinstall the operating system.When I say repair boot drive I don't mean permissions. There are both options in disk utilities.When you open disk utilities ,you will see in the left column  two drives plus possibly  a boot partition that look like an external driv. click on the second drive and in first aid use repair disk. If you still can't boot and it will not let you restore, you may have to do a clean install.   https://support.apple.com/kb/PH18869?viewlocale=en_US  

I did try single user mode; and also tried to run a repair of boot drive, however I could only get so far. I would get all the way to disk utilities and select the correct drive, but then the option to repair was greyed out. Finally, I tried to do a clean install, but the same thing happened where the options were greyed out. If you have any other suggestions, I'd love to hear them. Otherwise, I will try a factory reset.

Hi there. Are you referring to a SMC reset?

Hi there  When you tried to install from the recovery partition and got the install error. Ether you hard drive is bad or the restore partition is bad. Go back into recovery, utilities and click on the upper most disk drive in the left hand column. See if down at the bottom right it shows S.M.A.R.T status verified. Also go up to the file menu and click on it. See if you have an option to mount or unmount the disk. What I'm looking for is if it can be mounted. I think this might be the problem.

my ginger, I am having exactly the same problem as this and I've followed all the instructions on this thread but when I'm on the OS X Base System and check to see if I can mount the disk is doesn't let me click anything apart from info

When in recovery mode using Command R. What you have is the minimum  of a system to boot to, plus internet, terminal and disk utilities. A reinstall is done by way of the internet, not from the recovery partition , in the sense that it is not self contained. It is also a better idea to use ethernet as the source for downloading the restore. When in recovery and using disk utilities to check or repair your drive. It unmounts it so it can be repaired or checked. This is why it cannot be done from the operating system. If when in recovery ,disk utilities, all your options are grayed out, you may need to have an external disk such as snow leopard on a dvd to run utilities from. That would mean erasing the drive installing snow leopard and then updating back to yosemite.

Wer yu able to resolve  this?   I am having the same problem

My Macbook PRO 13 would not power up. I unplugged the battery and plugged it back in and the it turned on. The keyboard doesn't light up and if i try to take it to recovery mode it just abruptly shuts off. Then i have to unplug the battery again and plug it back in and start over. I also turn it back on and if i let it boot up it goes to a screen to reset password. I know my password but The keys won't type. If I hold down some buttons i don't remember which ones. I read them on the internet. But when i hold them down, the macbook just abruptly shuts off suddenly. If I unplug and replug the battery i can turn it on again. I am stuck and can't seem to get it into recovery mode cause when i wait for the sound after start up, i hold the command and R button but just as soon as i touch those buttons it shuts off. then i have to unplug the battery and plug it back in so that the power button with comply. Thank you for any help

Hi NOISEYCRICKETS  First, what operating system are you running? What year Macbook is it? Are you are running Yosemite or newer? Have you tried a startup without the battery connected? You need to hold down the Command R as it turns on, not after the start up chime. I have seen where if you hold down Command R and the power button for a few seconds and the release the power button , while still holding down Command R ,It will go to recovery screen.

my ginger. The macbook is a 2010. I actually don't know what operating system it has. I got it on Craig's list for $50.

Also when I press the command and R after the chime it just shuts off. Then I have to pull the bottom off the computer and unplug the battery. Only after I plug the battery in it will turn back on. I also trying to power it up with out the battery. But it won't turn on with just the power chord may safe plugged in. Any ways thanks for any help

To NOISEYCRICKETS First the Macbook should power on even if the battery is removed. Does your magsafe plug show yellow for charging? Or at least green? The original operating system on 2010 Macbooks was Snow Leopard. If you have that OS, going to Command R will not work. You would have to have the Snow Leopard Disk and run it by inserting it in the optical drive and start up holding down the C key,. You could try doing a Pram Reset by holding down the Command/Option P/R keys whils starting up and hold for three chimes. You could also do a SMC reset. This is done by unplugging the magsafe cord and the battery and then hold down the power button for 5 seconds. Then reconnect everything. If you can go to single user mode you could run a check of the operating system and do a repair if necessary.Here is a link on how to.https://support.apple.com/en-us/HT203176

最后更新：2017-08-19 12:41:56

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