I have been experiencing some very frustrating issues in the past couple of weeks. First of all, my computer (2011 15" MBP) has randomly crashed 4 times during the aforementioned timeframe. Each time I have had to reboot the computer multiple times, and have only gotten into the recovery mode twice. During startup, when I try going into record very mode, it will load until about 1/2 way. It will then proceed to go to a white screen and do nothing else. At this point the fans will gradually go up to full speed. Resetting the NPRAM has had not effect. Booting into safe mode is made impossible due to the same issue. Eventually after rebooting many times, the computer will finally complete the boot process and will work like normal. I have already run single user mode and run the fsck -fy command. Booting in verbose mode has produced some information that I find might be useful. It will run fine until it freezes up. The last couple of lines go as follows: VBoxFltDrv: version 4.3.18 r95616 VBoxAdpDrv: version 4.3.18 r95616. That was until yesterday when I decided to get rid of VirtualBox completely. Now the problem is that booting in verbose mode reveals a stall that always takes place on the following line: en2: promiscuous mode enable succeeded. As of this post, I have still not gotten the computer to boot successfully. The stall always takes place at the aforementioned line.
OS X Beta unresponsive on startup, crashes randomly during normal use
I think that bootcamp must uncheck it by default to avoid this, because it is on by default for Windows installed normally...
But yes, the test will be if properly shutting down Windows from the start screen by typing cmd and then shutdown /s /t 0 in the window that appears. After doing that you'll hopefully be able to boot successfully time after time. It'll be interesting to know...
So far so good, just shutdown using the command. Booted up OS X it's no problems at all. Now all that's left to do is use the computer normally for a while, put it to sleep, leave it for a couple hours and see if it wakes successfully.
Good (so far 🙂) - I suggested using the command to make absolutely sure of the shutdown but, as I understand it, the fact that the "fast startup" option is set to off should make the command unnecessary...
Alright, so after using the computer all afternoon yesterday up until midnight, I had no issues. Pretty awesome. Today, I opened up my laptop to find that it no longer presents me with a black screen. In other words, everything seems to have gotten back to normal. I will go ahead and mark the correct answer. Max, Thank you so much!
Glad you got it sorted 🙂
It helped that you were able to examine the logs in Single User Mode and knew what to look for in a Verbose boot. You can aid anyone else using this thread to solve a similar problem by promoting your own replies that contributed to the fix. Click on the Actions menu underneath them to "Mark as Helpful" and they will be accessible from the top of your post for anyone else needing the same solution.
Alright, will do, Thanks!