Step 3 – Try resetting the Non-Volatile Random Access Memory (NVRAM), also known as the ‘Baby Stroller’ on to get past the white screen on your MacBook Pro. This is done by shutting down your MacBook Pro and when restarting it you need to immediately hold down the ‘Option’ and ‘Command’ and ‘P’ and ‘R’ keys together.
This combination of keys on start-up will take you through to the ‘System Preferences’ screen where you may be able to modify the options you need to so you can banish the white screen of death.
NVRAM is a small, dedicated section of memory on the system which stores settings for the MacOS. This is the home of settings such as volume, display resolution, start-up options, and more recently, kernel panic information.After you reset your NVRAM, you will need to check to see if you need to reconfigure your volume, screen resolution, time zone, and Boot-Disk settings.
Step 4 – If you have not been able to get rid of the white screen on your MacBook Pro, then you can attempt to start-upunder‘Single User’ or ‘Verbose’ mode. I will warn you that this gets pretty techy, and you should only access or change things in these modes if you are proficient in the operation of UNIX. Otherwise, if the white screen of death is still hanging around, I’d suggest you take your MacBook Pro to a Pro for them to work on. Better safe than sorry when this deep into troubleshooting the cause of the white screen on your MacBook Pro.
To access ‘Single User’ mode you need to hold down the ‘Command’ and ‘S’ keys immediately after powering up. You will have access to Single User mode when text appears on the screen, at this point you can release the keys. You will most likely see a drop-down display for this option.
To access ‘Verbose’ mode, simply hold down the ‘Command’ and ‘V’ keys immediately after startup.You will have access to the Verbose mode when text appears on the screen, at this point you can release the keys.
If you are using ‘FileVault’ make sure you hold the keys down for around 15 seconds. You will then need to release the keys in order to see the login screen. From here you’ll be able to log in and continue to access the system through either Single User or Verbose mode. In the case that you are using a Firmware password, this will need to be deactivated before you can access the system in Verbose or Single User mode.
Once you have booted up in Single User mode, follow the sequence below to verify the consistency of your system and then reboot to check the volume.
- The ‘fsck-FY’ command runs a check on the boot volume of your system and corrects any errors detected as required.
- The ‘* mount –UW’ command opens the remount start volume and allows writeable access.
- The ‘f/private/var/db/. AppleSetupDone’ command lets the system know that the configuration is completed.