My Intel iMac if left powered on doesn't seem to startup the next day but stays frozen on the blue screen with the sign-in box.

My computer when left on overnight is not ready to start up the next morning. It shows the blue screen, but won't even let me sign into the sign-in box. Does this mean there is some kind of software conflict with the OS?


iMac 21.5″, macOS 13.2

Posted on Mar 28, 2023 10:27 AM

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Question marked as Top-ranking reply

Posted on Mar 31, 2023 7:58 AM

Hello Applemac107,


We would like to see how we can help you with your Mac showing a blue screen. Follow the steps in this link and get back to us with your results: If your Mac doesn’t start up as expected - Apple Support


"Blue startup screen

If your Intel-based Mac computer displays a blank blue screen or a blue screen with a multicolor pinwheel at startup, it indicates there may be incompatible startup items or software. Try these suggestions.


Cheers!


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3 replies
Question marked as Top-ranking reply

Mar 31, 2023 7:58 AM in response to Applemac107

Hello Applemac107,


We would like to see how we can help you with your Mac showing a blue screen. Follow the steps in this link and get back to us with your results: If your Mac doesn’t start up as expected - Apple Support


"Blue startup screen

If your Intel-based Mac computer displays a blank blue screen or a blue screen with a multicolor pinwheel at startup, it indicates there may be incompatible startup items or software. Try these suggestions.


Cheers!


Mar 31, 2023 3:25 PM in response to Sean_B1

Hi, thanks so much for your suggestions. Since I'm lazy, I tried a shorter cut, although I'm sure your suggestions would have worked had my own "shorter cut" not. I just went to my Log-In apps under Systems Settings, looked at which apps were set to automatically start-up, and took a guess as to which one or ones were causing the problem. While there were a number of apps at start-up, some were Microsoft, some were downloaded after this issue first occurred, and this left two of them that were unnecessary to keep in start-up. So, I should start with those right? I turned off Zoom and Adobe Reader to initiate at start-up. Then, I tried a couple of ways to test the start up issue that occurred and, "poof" didn't have the issue again. So, don't know if Zoom or Reader was creating the problem with OS Ventura, but it was one of them. If I had to guess, I'd pick Zoom.

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My Intel iMac if left powered on doesn't seem to startup the next day but stays frozen on the blue screen with the sign-in box.

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