Got a new update to maverick and after it installed my iMac. Rebooted to a black screen. Tried unplugging my computer tried holding shift tried holding option tried command+opt+p+r nothing. It will give the startup DING then nothing but black screen
iMac (27-inch Mid 2011), iOS 7.0.4
http://www.thexlab.com/faqs/startupitems.html
If the problem isn't from installing incompatible ram then it could be one of these issues.
Safe boot doesn't work
Single user doesn't work
Verbose doesn't work
Recovery mode doesn't work
And the ram is whatever apple put in it
After doing this it made working noises but the screen remained black
Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.
Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional — ask if you need guidance.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
*An SSD doesn't need to be zeroed.
Hello
I have the same problem.
Its problably a malfunction on the Logic board, which costs around 500 usd
I got mine looked at. My imac is a 2011 model and the video card was under recall. After they replaced it for free it was fixed.
You know if there is a list where i can check if my board is under recall?
This is a horrible problem. The problem has existed for almost half a year and it's still unresolved after three updates.
<Edited by Host>
New maverick update my iMac won't boot up
