My Mac mini end of 2012 does not start: stuck at the total black screen

Thus,.

I tried to install Windows 8 with bootcamp using a USB key. It did not work ("" can not do a new partition on this disk or some * like that "") but this, I'm sure that has not affected my install OS X, I've never been format the Bootcamp partition.

So, I leave the Windows installation program, reboot and remove the USB key. Now, I get the black screen that OSX shows when it has no OS, giving me the impression that he wiped / corrupted installation.

Very well...

But there is a twist. I can not hold option to join the boot device selector, nor can I press CMD + R or retrieve internet. Metal target does not work. I have reset the NVRAM successfully a few times, but it start always black.

I am using a wired keyboard and mouse. I tried to use external SuperDrive with a CD player. As well as USB. I'm lost and I'm an experienced technician, and I admit that I am an iSheep. Then Yes.

Thank you.

(And I didn't get any update of third party other than an SSD, which worked well for centuries)

EDIT: and I reset the SMC EDIT 2: I know also that this probably isn't a hardware problem, I am positive my OS X install and the OS X recovery partition are corrupt. I don't understand why I can't hold option, and I don't understand why the recovery of the internet does not work when you have no recovery partition. I would be grateful if I could start anything, without having to open my Mac.

Do you get a startup chime?

Unplug everything except KB/monitor / power and try to start with the command + R and press the Option key.

If still problem dismantle the Mac and disconnect the internal disks and try again

Try reinstalling the memory

Try an another KB

Tags: Windows Software

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