MacPro freezing on Monterey update. Downloaded, but will not boot up.
Last night I tried to update my MacPro (Intel chip) from Big Sur to Monterey. I knew it would take a while, so I started the process and then went to bed. When I woke up 9 hours later, I was surprised to see a black screen with a white Apple and a frozen progress bar.
I held down the power button to turn off the computer, and tried booting up in Recovery Mode. I ran Disk Repair on my hard drive--all good, no problems. I try Reinstalling OS Monterey from Recovery Mode, and the same thing happens--it downloads the installer, but when the computer restarts and tries to boot up and load the OS, it ends up frozen.
I *do* have CleanMyMac installed, and from peeking around these forums, that seems to be a consistent culprit for these kinds of issues--but unfortunately I can't get my computer booted up to remove it.
No matter what I seem to do, I keep hitting a brick wall. Any suggestions?
EDIT: Just tried resetting NVRAM because at this point I'm just throwing whatever I can at the problem. Didn't help--right back to the frozen progress bar.
Starting in Safe Mode doesn't seem to work either. It doesn't take me to a login screen--just back to the B&W installation screen where the progress bar freezes.
