Macbook Pro Reboot Problem

  1. Why Does My Macbook Pro Keep Restarting Because Of A Problem
  2. Macbook Pro Not Booting Properly
  3. Macbook Pro Problems Turning On
April 21, 2014

My MacBook pro just restart randomly. I did some research about kernal panics but I did everything even reinstalling the os. I'm not sure if the problem would be a bad board or memory causing it to restart. I check the hard drive. No problem there. I tried doing the starting up with the D key but that doesn't work at all unless I press option. Thanks, I've successfully used this method with the non-touch 2016 13' MBP (both TB3 and TB2 enclosures). For the dGPU equipped Macs I recommend combining gpu-switch integrated mode prior to executing applesetos.efi but I don't know if it will work.

  1. Is your MacBook charger not working? If yes, we will discuss some of the effective methods to fix the issue 'Macbook Pro Not Charging.'
  2. Yep, it sounds silly, but the fact is that rebooting your MacBook can often solve a number of problems. If you’re encountering these types of strange behavior with your laptop, a reboot might be all you need to heal: Intermittent problems communicating over a network A garbled screen, strange colors, or screwed-up fonts The swirling.
  3. Clues to the causes of Macbook startup problem can be found by analyzing when in the boot process the system fails. Problems may be related to the power sup.
Clues to the causes of Macbook startup problem can be found by analyzing when in the boot process the system fails. Problems may be related to the power supply, battery, hard drive, logic board, OS corruption or an issue with a user account. Macs are reliable machines, but like many of us they get cranky from time to time.
Here’s what to do if your Macbook won’t start up. Take each of these steps that you haven’t already tried. Stop when the problem is resolved.
The first step in dealing with a boot failure is to secure your data. If you want to preserve the contents of the startup drive, and you don’t already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don’t care about the data that has changed since your last backup, you can skip this step.
Macbook
There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
a) Boot into the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.”
b) If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won’t work with USB, Ethernet, Wi-Fi, or Bluetooth.
c. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
If you’ve booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.

Why Does My Macbook Pro Keep Restarting Because Of A Problem

Boot in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you boot in safe mode, it’s normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, your boot volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 5.
If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot volume (“Macintosh HD,” unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don’t, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn’t complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then reboot as usual (i.e., not in safe mode.)
If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Sometimes a boot failure can be resolved by resetting the NVRAM.
Launch Disk Utility in Recovery mode (see Step 1.) Select your startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can’t be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line “Permissions repair complete” at the end of the output. Then reboot as usual.
Pro
Reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Repeat step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a Time Machine or other backup.

Macbook Pro Not Booting Properly

This step applies only to a pre-2013 Mac Pro tower, not to any other model. A dead logic-board battery can cause a gray screen at boot. Typically the boot failure will be preceded by loss of the startup disk and system clock settings. See the user manual for replacement instructions.

Macbook Pro Problems Turning On

Pro
If you get this far, you’re probably dealing with a hardware fault. Make a “Genius” appointment at an Apple Store to have the machine tested.