My MacBook pro is stuck on "setting up your Mac" part it's been over an hour now.

THANK GOODNESS... and glatzsa! This worked for my iMac27" late-2009 as well.

Power down the computer, Press and hold Shift + Control + Option simultaneously, press and release the power button and release Shift + Control + Option (after I heard the chime) and my system came right up.

The Long Story:

My iMac would not boot up, it would get stuck on the grey (or white) screen after the Apple and Progress Bar screen.

Three days of Safe Boot, Recovery Mode, Disk Utility checks/repairs, Single User Mode, resetting NVRAM (formerly known as PRAM), and IM'ing with two different Apple Geniuses (they were very cool, BTW).... produced no results. Finally I had to wipe my HDD and reinstall. THEN.... I got stuck on the "Setting Up Your Mac" page just like the original post, for about two-plus hours. By then I was at my wit's end.

So thanks again! 🙂

BTW, just to make sure, I just ran a Restart and everything booted up just fine!

THANK YOU for posting this!

Thanks Glatzsa!!!!

Worked like a charm !!!!

😀 😀 😀 😀

Thank you so much. This just saved me with a new Yosemite install.

this worked great thanks so much!

I had this issue all day today, and I just want to say a huge thank you to 'glatzsa's helpful reply'. Really appreciate it - It worked perfectly. Cheers, khlosh

Thank you. Followed your steps and we are good to go. I got the agreement page as well, but clicked through it and up it came.

Thank you glatza, it worked

So this Control + Shift + Option would be like a hard reboot?

I'm having the same problem while upgrading to the OS X El Capitan from OS X Maverick.

Can the same be done in my case?

No damage will be done to my files, or to the upgrade itself?

Thank YOU!!!!!!🙂🙂😁 I used this advice when the screen got stuck on Updating to OS X CAPTAIN ....it was stuck on 'Setting up Your Mac'...

It worked in under 30 seconds and booted to OS CAPTAIN immediately! Thank you.....

For me, Brand spanking out of box macbook air... 2.5 hours spinning. I tried your trick and it rebooted with a crossed out circle... GRRRRR Back it goes!

Mine happened twice already. What is causing this to recur?

Thank you.

Karina

workes as easy for me, thanks your the man...