Q: My MacBook Pro Retina won't turn on! Yesterday I installed the new updates.

Have you tried an SMC reset?

Just to say that I experienced this today, too. I unplugged from the outlet and plugged it back in, still no response. Then I tried holding down command-option-PR to start -- wouldn't start. After a few more times hitting the power key, it booted as normal. No idea what's going on

I thought I could detect fans running, but I may have been wrong. (There was a lot of background noise in my office.) According to the console, the Mac was shut down, but I got some weird messages:

8/13/12 9:31:44.468 PM com.apple.launchd.peruser.502: ([0x0-0x16016].com.apple.iTunesHelper[358]) Exited: Killed: 9

8/13/12 9:31:44.469 PM com.apple.launchd.peruser.502: ([0x0-0x2d02d].com.apple.AppleSpell[3087]) Exited: Killed: 9

8/13/12 9:31:44.470 PM com.apple.launchd: (com.apple.dock.extra[3697]) Bug: launchd_core_logic.c:6105 (25693):0

8/13/12 9:31:44.470 PM com.apple.launchd: (com.apple.dock.extra[3697]) Could not setup Mach task special port 9: (os/kern) invalid argument

8/13/12 9:31:44.470 PM com.apple.launchd: (com.apple.dock.extra[3697]) Could not setup Mach task special port 8: (os/kern) invalid argument

8/13/12 9:31:44.471 PM com.apple.launchd: (com.apple.dock.extra[3697]) XPC Service could not exec(3). Resetting port.

8/13/12 9:31:44.470 PM com.apple.launchd.peruser.502: (com.apple.mdworker.pool.0[3688]) Exited: Terminated: 15

8/13/12 9:31:44.511 PM loginwindow: DEAD_PROCESS: 53 console

8/13/12 9:31:44.592 PM shutdown: halt by [username]:

8/13/12 9:31:44.593 PM shutdown: SHUTDOWN_TIME: 1344911504 592480

Shutdown halted? Or did it shutdown?

One week old Macbook Pro 15" Retina.

Shut it down at home.

Drove to the office.

Tried to boot.

Nothing.

Pressed the power button again and I could tell the screen went darker.

Pressed the power button again and I saw it get a hue of black that made me think it was going to boot.

After 4 attempts (2 with and 2 without power adapter), it finally got to the login.

Then NOTHING, back to being stuck.

Tried that a couple more times.

Finally booted.

Here I am finally posting something on the support site.

I'm frustrated.

Have you done the latest firmware update? I believe it came with 10.8.2, which just shipped this week. It's possible this will solve the problem.

Or you could try resetting the SMC:

http://support.apple.com/kb/HT3964?viewlocale=en_US&locale=en_US

Both of these might address what sounds like a power issue.

Otherwise, calling Apple is probably a good idea. Your computer is very new, and it's possible that there is a hardware issue. If it's a sporadic problem, this can be difficult to diagnose (i.e., convince Apple to fix for free). Once you make a report to Apple via AppleCare, you will get a case number. If they fix it, great. If it happens again, call Apple again and refer to the case number to report another incident. This will allow Apple to see the whole picture and will help them diagnose and fix the problem.

Good luck! My power issue seems to have fixed itself.

I know this post is from back in September of last year, but I wanted to comment for posterity to say what worked for me with my July 2012 retina MBP refusing to turn on. From the link preludio posted above: http://support.apple.com/kb/HT3964?viewlocale=en_US&locale=en_US

Use the "Resetting the SMC on portables with a battery you should not remove on your own" method (ie., for all Macbook Pros early-2009 and later). Worked perfectly for me:

1. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if it's not already connected.
2. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
3. Release all the keys and the power button at the same time.
4. Press the power button to turn on the computer. 

Anonymous34 wrote:

Umm, I think his problem is fixed, but he forgot to respond.

Yeah, I figured as much, but I thought I would post what worked for me because I found this thread Googling because I had the same problem. Since there was no "XYZ method worked" post, I thought I would help any other people who might stumble on this thread with similar issues.

It happened with me too. Dont worry just press power on button once and wait for more than few minutes and then press power button again it will boot.

dont worry you had your software updated after which, when you power it on it delays for minutes of time and by pressing the power on button again it boots. normal it happend with me too.

It happened with me too. Dont worry just press power on button once and wait for more than few minutes and then press power button again it will boot and it happens once when you update it for the first time.

It happened with me too. Dont worry just press power on button once and wait for more than few minutes and then press power button again it will boot and it happens once when you update it for the first time when you update the firmware.

Mine turned out to be a bad Graphics Processor.

They replaced my MBP and no more problems.

It sounds like some different issues may be out there and most are fixed with new firmware, but sometimes it just turns out to be a hardware failure.

Thank you! It worked.