iMac not booting up since installing Monterey OS

Thanks so much for your reply. Yes, I have done that at least 20 times. What happens is the progress bar gets stuck about 1/3 of the way and does not progress, and eventually the screen goes black. Sometimes it shuts down, sometimes it reboots, but it continues to only progress about 1/3 of the way.

Hello,

So sorry to hear this. Yes, I continue to have trouble with my iMac booting up. I have done first aid repair several times, and I also tried the suggestion (3-4 times) to shut down the computer, and then press simultaneously, power + command + option + P + R and wait for the second chime. It didn't seem to work.

What has seemed to work is continuing to shut it down and then reboot. Eventually, it booted and then I just did not sleep it our shut it down. If I put it to sleep, I could not get it back and sometimes it just went to black (as it sometimes does when about 1/3 booted).

Go figure! I wish Apple would be more responsive to these issues when the update the OS.

Good luck,

Hello,

in addition to the multiple steps I mentioned earlier, I also made sure I did not have any usb cables connected (for me the printer and external hard drive). This seemed to fix it. I can now shut down and reboot without it freezing or crashing.

canoechick

Thank you.