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Macbook Pro shuts down half way through startup.

My Macbook Pro when powered on makes the chime sound, then the Apple symbol appears on the screen, and the progress bar appears across the bottom. The progress bar moves across to about 2 cm mark then stops, then the whole thing just shuts down.  I've checked and the battery indicator says it's fully charged.  I've tried turning on with and without mains power connected.  Any ideas?

Hi. Try restarting your Mac in Safe mode:

- Shut down your Mac

- Wait until your computer turns off and after that press the Power button

- Right after you hear the startup tone, press and hold the Shift key

- Release the Shift key when you see a grey Apple sign and the progress bar below this sign

- Once you see Desktop, start a Disc Utility scan to detect and repair file system errors (don't forget to choose your main hard drive)

- Click on Verify Disc and then, if asked to fix problems, on Repair Disk

- After this, click on Verify Disc Permissions and then on Repair Disc Permissions

- After the process is finished, shut down your Mac and turn it back on after about 30 seconds

Reset the SMC and NVRAM:

https://support.apple.com/en-us/HT201295

https://support.apple.com/en-us/HT204063

Then try a safe boot:

https://support.apple.com/en-us/HT201262

Any change?

Ciao.

Tried your suggestion, same thing happened. Progress bar moves about 2cm, stops then shuts down. Thanks for your help.

Thanks for the suggestion, but I can't get into the computer to run anything.  It's shutting down before it even completes startup!  It won't even let me start in in Safe Mode

Try the SMC reset again.  If no success, then an appointment at an Apple store genius bar is your best option.  The evaluation will be FREE.

Ciao.

Hey there. Sorry to bother you, but I was reading through this thread and realized you had the exact same problem that I am having now. I did all the things that were recommended but nothing worked. I have an appointment set with apple, but not until next week. Did you ever find out what it was?

I’ve been having this problem for the past week and do not have an Apple store near me. were you able to figure out the solution to start up your Mac? I would really appreciate any suggestions you have.

最后更新：2017-09-07 09:06:50

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