I Upgraded to Sierra and after install, shut down the MacBook Pro for the night. When I tried to use the computer the next morning, I got only a blank white screen. The computer never advanced to any other screen, not even panic screen. Anyone ever see this? What to do to correct?
Cordially,
WaltO
MacBook Pro, OS X Yosemite (10.10.5)
I got same problem and my technician out from the official store told me that its VGA broken cause high sierra. Omg.. now my mac still dying. Cause fixing VGA just like buy the new mac. I hate it.
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I Will try to clarify. I pressed the power key. Before the chime occurred, I pressed and held the command, option, P and R keys. The chime occurred as usual at a few seconds, but I continued to hold the keys in for 3 minutes. As I indicated, nothing happened. I am using a MacBook Pro 6,2 mid 2010 with built-in keyboard. The computer never passes the white screen phase.
You don't provide any usable information on which to base any adequate help.
What model is your mac? Why do you say VGA? Are you connecting to a VGA monitor?
The OP said MacBook, so his problem for sure has nothing to do with VGA.
Please describe in detail what your situation is, and be specific.
If it is indeed a hardware problem (though I don't think it has anything to do with VGA, which can only be attached using an adapter to any mac less than 18 years old!), there is little we can do. Macs, like any electronic device, can break. However, most of the issues turn out to be software.
I Attempted to reset theNVPRAM. I started the MacBook Pro and at the chime pressed the command, option, P, and R keys. Nothing at all happened. After about 3 - 4 minutes, I presses the power key for about 10 seconds. Then I restarted the MacBook Pro and at t he chime pressed the shift key. Again nothing at all happened. Again I forced the MacBook Pro to shut down. Then I inserted the install disc and at the chime when I started the MacBook Pro I pressed the command and R keys. Once again, nothing happened. This is where I am. I cannot get the disc drive to eject the install disc. What next?
You may have missed the right timing for the reset NVRAM.
Hold down command-option-P-R IMMEDIATELY after pressing power, or even before that if you can.
The moment you hear the chime you've probably missed the "train" already.
I attempted to repeat the original tips but executing them prior to the occurrence of the chime. After pressing the power button and before the chime I pressed the command, option, P and R keys and held them for 3 minutes. As before nothing happened.
I restarted the MacBook Pro and before the chime pressed command and shift keys and held them for 3 minutes. Again, nothing happened.
Since the install disc is still in the DVD reader, I restarted the MacBook Pro and before the chime held down the command and R keys or 3 minutes. Once again nothing happened. Any other thoughts? Tomorrow morning I will try contacting Apple Support.
Thanks for the help and suggestions.
Something is definitely not right. Resetting NVRAM should have given you the chime after a few seconds, not minutes.
Is this a MBP as it says in your profile? Using the built-in keyboard? If it is a Bluetooth keyboard there is always the doubt if the system is "seeing" the keyboard soon enough for those keys to take effect. (In my iMac, I can reset NVRAM if I restart, but was unable to do it from a cold start - presumably because the system was not seeing the BT keyboard in that situation).
Thank you for the clarification.
By keeping the keys down, the normal response of the system should have been to chime, and then chime again, and again every few seconds until you let go of the keys.
It seems that this is not what you are seeing, so I am suspecting the chime you hear does NOT indicate the NVRAM reset, but it is proceeding to the normal boot process, which is failing.
You may try yet another thing, that is to reset the SMC (system management controller), then try again the reset NVRAM and see if something has changed. If not, then you may have to take the machine to an Apple store or authorized repair shop and let them take a look at it.
The procedure to reset the SMC varies with the model, but they are all described in this page:
Reset the System Management Controller (SMC) on your Mac - Apple Support
I read the article and executed the SMC reset sequence. Nothing seemed to have happened. I then reset the NVRAM and again nothing happened. I repeated the sequence a second time in case I was insufficiently synchronous in the key presses. Again nothing. I have insufficient time to contact apple now, so l will try tomorrow. Any other thoughts? Thank you for your thoughts and considerations.
Lindsay.
Thanks for the suggestion. I contacted the Apple Support folks and we executed a safe boot sequence and a recovery boot sequence. Since both failed, I was referred to the Genius Bar at the local Apple Store. I took the MacBook Pro by itself and the technician linked it to the Apple network by ethernet. He entered a few commands on his tablet to see the software systems I had resident. Then suddenly, the MacBook Pro came to life and all my systems were up and running. He checked out all systems, shutdown, start-up, sleep, wake, etc. Conclusion: everything now working, not sure why. Come back if it recurs.
So I returned home, restarted the computer, re-attached the external drives I use for specific memory, and caught up on much of my needed work. Then I noted that the documents and downloads were no longer in the folders expected. The time machine had made two backup changes so I would have to get a backup from before the systems crash. I attempted to do this but when the computer restarted it froze in the white screen after the stars chime. The problem was back. Then I realized that the difference was the addition of the external drives. I unplugged them and lo! and behold! the computer restarted but did not have the desired backup in the HD. So it seems that the problem is that at least my download version of Sierra does not boot up if usb or firewire linked drives are attached. Have you or anyone else heard of this problem? Also, if this is the case then how will I be able to get my desired configuration reinstalled on my HD since my TimeMachine backup is on an external HD?
Hi Walt,
I tried all the steps but no use. I took bootable siera mac os. Then Press CMD + R for recovery mode but it show only mac OS HD No recovery option. Then i press CMD + OPTION + Shift its shows nothing again it goes to white screen. Then i press CMD + OPTION + P + R and it restarted twice Then again its shows white screen. I never get hope. And i press option button when i switch the power button again its show install OS then i press to install again it goes to white screen.
OMG !!!!!!!!!!!!!!!!!!!!!!!!1 Finally i press Power button + CMD + Option + Shift its goes to install OS
Because my os get struck while installing.
I also have a late 2010 MacBook Pro. And I face same issues. I also tried everything.
Not working
After upgrade to Sierra only white screen, does not proceed further. The MacBook Pro is useless.
