Chosen Solution
I have been in a dilemma trying to troubleshoot the black screen in my macbook that happened suddenly. The machine is very lightly used but i don’t know what caused it. When the machine is powered on nothing appears on the display. The keyboard doesn’t lit up which says its not going into OS. When i connect to external display fortunately i can see its asking for Password reset. But why Password reset ? I didn’t want to reset my password. From the top bar i managed to boot into disk utilities. There i deleted,erased and broke all my partitions and merged them again. Installed Mac OS High sierra and when it finished downloading from the internet an error appeared “Could not create a preboot volume for APFS install”. I tried formatting the drive to MAC OS journaled but it was not happening. Then i downloaded a copy of high sierra on my windows PC and made a bootable flash drive with Transmac. i managed to get into disk Utilities pressing Control+Command+p+r+power and from the startup disk on the top bar i selected my flash drive and booted into it. Now i was able to partition my SSD to MAC OS journaled. Then the setup started. Everything went on normally. I set up my MAC and finally the OS appeared on the external display. At this point of time the MAC is still is connected to external display. Now i shut my macbook down. Disconnected it from the HDMI hoping now everything will be normal as OS is installed normally. As soon as i turn on my macbook, there’s a chime and black screen…no changes.The installation of new new OS did nothing. OK fine . Now connected to external display. It should work normally right ? The keyboard should lit up, the login part should come up. If those appeared i would have said its a problem with display. But no again black screen and i am back to zero. Booting to my SSD (Macintosh HD) from disk utilities does nothing and only black screen. What is the problem guys ? This is bizzare. Can anyone shed some light into this ? Thanks in advance.
Have you tried an SMC reset? Also a PRAM reset since the installation of the new OS(command-option-p-r)?
Which application do you use most of the time like, I use iMessage For PC and some time its stuck just because of heavy ram using. And you’re black scree automatically will fix up.
