I did the command-option-p-r and now my computer wont start. Every time i try to start my computer the apple logo appears with a loading bar on the bottom. When the bar has loaded the computer shuts itself off again. What do i do to fix this?
[Edited by Moderator]
MacBook Pro
aibent86 Said:
"I did the command-option-p-r and now my computer wont start. Every time i try to start my computer the apple logo appears with a loading bar on the bottom. When the bar has loaded the computer shuts itself off again. What do i do to fix this?"
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Thank you for the photo.
Troubleshooting a Mac in a Boot Loop:
Being continuous, it seems there is an error in the caches. So, refer to the following...
A. Boot in Safe Mode:
In Safe Mode, Login Items do not run at login, certain preferences are set aside, and damaged system files are then reset. So, once booted in to Safe Mode, wait 30 seconds, and then boot up normally, attempting another update install. For instructions, go here: How to Use Safe Mode on your Mac - Apple Support
B. Reset your SMC and your NVRAM:
(Applies to Intel-Basel Macs Only): Sometimes changes (i.e. Installations) are made to the system and then settings (i.e. Networking) become corrupted, technically. So, reset both on your Mac. So, reset the SMC and reset the NVRAM or PRAM. It might take three tries. to fix this. So, be certain you have the time to do so.
Start With This:
C. Re-Mount the Drive:
Boot into Recovery Mode (Intel or Silicon) . You need to click the “Mount’ button to proceed. So, select the drives, and then click "Mount" Try rebooting once more. If of no success, then click unmount button, and then the mount button. Try rebooting once more. It looks dulled-out. So, if you cannot click it, then click the First Aid button to fix this volume.
aibent86 Said:
"I did the command-option-p-r and now my computer wont start. Every time i try to start my computer the apple logo appears with a loading bar on the bottom. When the bar has loaded the computer shuts itself off again. What do i do to fix this?"
-------
Thank you for the photo.
Troubleshooting a Mac in a Boot Loop:
Being continuous, it seems there is an error in the caches. So, refer to the following...
A. Boot in Safe Mode:
In Safe Mode, Login Items do not run at login, certain preferences are set aside, and damaged system files are then reset. So, once booted in to Safe Mode, wait 30 seconds, and then boot up normally, attempting another update install. For instructions, go here: How to Use Safe Mode on your Mac - Apple Support
B. Reset your SMC and your NVRAM:
(Applies to Intel-Basel Macs Only): Sometimes changes (i.e. Installations) are made to the system and then settings (i.e. Networking) become corrupted, technically. So, reset both on your Mac. So, reset the SMC and reset the NVRAM or PRAM. It might take three tries. to fix this. So, be certain you have the time to do so.
Start With This:
C. Re-Mount the Drive:
Boot into Recovery Mode (Intel or Silicon) . You need to click the “Mount’ button to proceed. So, select the drives, and then click "Mount" Try rebooting once more. If of no success, then click unmount button, and then the mount button. Try rebooting once more. It looks dulled-out. So, if you cannot click it, then click the First Aid button to fix this volume.
You can try all sorts of stuff, but I've personally experienced a drive that was corrupted and would simply never boot again unless the drive was wiped. I ended up getting a new drive hoping that I might be able to recover some of the data that wasn't in my month old backup that I used to clone a working drive again. And more recently I thought maybe it would futile trying to recover data and I reformatted the drive, only to get the click of death, which meant the drive was in fact never coming back even after a reformat.
MacBook Pro won't complete boot
