My Macbook pro keeps shutting down right after I log in. The power cord seems to be fine, so I think the computer has enough power. Right after logging in, it shows a grey background with a loading bar that loads only 1/4. Then it shuts down.

Ami I was able to solve the problem you described. In order to get my machine going I would have to prompt it several time before escaping the erratic screen behavior. The way I did it were to

Open the application folder

Open the Console app

Do the following clear the first Mac device Icon of all of its files

repeat the same process for the foll folders and files in the sidebar

having completed the the above process; Re-start the machine

Next: update your Mac with the recent Mac OS 10.12.4 Publc Beta.

THis worked for me supberl, my machine now runs as new.

sace coins and headaches

Good luck

Hi,

I am having the The same problem above it all started when I got into the terminal and put CSRUTL disable and and when I restarted my Mac this problem occurred I again and took the recovery mode and enabled what I have disabled

Had a similar issue tried all those fixes nothing worked including unplugging battery, so i ran in hardware diagnostic mode and even though I had a new battery installed 1st week of June 2017 It told me I had a defective battery so I called my supplier was sent another new battery, and had to safe boot a few times before all the bugs dissipated but it was the battery and mine would not power on with out battery plugged in yours may be different mine is early 2011 15 in Macbook pro running Sierra 2.3 GHz i7 but it never hurts to try the hardware diagnostic mode let the machine tell you whats wrong instead of guessing.

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. http://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.

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. http://support.apple.com/kb/PH18869?viewlocale=en_US

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.