User level: Level 1 (16 points)I am still using Monterey 12.7 and my Imac occasionally shuts down and takes forever to reload , like 15 -20 minutes
Posted on Oct 15, 2026 1:56 PM
User level: Level 10 (99,154 points)Oct 15, 2026 4:32 PM in response to bobj43
bobj43 wrote:
I am still using Monterey 12.7 and my Imac occasionally shuts down and takes forever to reload , like 15 -20 minutes
That could be caused by anything from bad third-party software to a full or failing internal drive.
Test 1
Download and run the free version of EtreCheckPro, from > https://etrecheck.com/en/index.html
Then post back here with your Report, as per > How to use the Add Text Feature When Post… - Apple Community
Test 2
Run the Apple Diagnostics Test, as per > Use Apple Diagnostics to test your Mac - Apple Support
User level: Level 10 (99,154 points)Oct 15, 2026 7:56 PM in response to bobj43
It is very possible for a flaky External drive or bad USB cable to cause shutdowns and prolonged startup times.
Test it with that External drive disconnected for a couple of days.
Then if that fixes your initial problem, replace that External drive.
FWIW I still recommend running EtreCheckPro to look for other problems.
User level: Level 2 (256 points)Oct 15, 2026 3:17 PM in response to bobj43
I also still use the old macOS Monterey 12.7.6 on a Vintage 2015 MacBook Pro!
I have no problems, with slowdowns or slowness!
But if ,it get slow and sluggish I reinstall the Macbook from my external harddrive!
You write, that you still. use Monterey, That's no shame!
There are still some of us, who use the old hardware, and the old OS.
User level: Level 1 (16 points)Oct 15, 2026 6:41 PM in response to bobj43
I'll give the etrecheck & apple diagnostics a try . This afternoon I unplugged the "my passport" backup and restarted . Oddly enough that seemed to help , but its too early to tell.
User level: Level 1 (16 points)Oct 15, 2026 8:14 PM in response to den.thed
Good Idea , I'll unplug the external drive for a couple of days . I did download and run ETRE Check . No major problems , but minor issues showed some apps with heavy CPU usage and some apps are old , incompatible , etc . I need to do more checking on those apps. I also ran the Apple disk utility to repair and check hard drive. All in All your advice was exactly what I needed , Thanks a Million $$$
User level: Level 2 (256 points)Oct 15, 2026 5:27 PM in response to bobj43
If an Etrecheck Test, had helped, I would have probably suggested it!
User level: Level 10 (99,154 points)Oct 15, 2026 5:35 PM in response to claus237
claus237 wrote:
If an Etrecheck Test, had helped, I would have probably suggested it!
It can help identify bad software, a full drive and some hardware issues.
User level: Level 2 (256 points)Oct 15, 2026 5:45 PM in response to den.thed
You may be right!
User level: Level 1 (16 points)Oct 15, 2026 6:44 PM in response to claus237
I'll try anything once
User level: Level 10 (99,154 points)Oct 15, 2026 8:30 PM in response to bobj43
You’re welcome. Keep us updated on the progress.
Originally posted at discussions.apple.com/thread/256376864