I hardly ever turn my Mac off. I send it to “sleep” and then just press the space bar to wake it up when I want to use it. In the past few days the screen wouldn’t fire up even though I could hear the disk spinning up. This morning it was completely off and in both cases the only way to fire it up was to use the physical start button and start up from scratch. I’ve tried the NVRAM cure by starting up with CMD+OPT+P+R but that doesn’t seem to work. I’ve checked my power saver options and they haven’t changed. This has only happened since I installed Mojave. It has also happened a few times during the day.
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Tony Staples
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How Do I Stop My Mac Turning Off Overnight?
Comments: 8 Responses to “How Do I Stop My Mac Turning Off Overnight?”
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That isn't normal, so there is no easy fix. You can take it to an expert to have them check things out, or you can try troubleshooting it yourself. I would start by quitting app applications before you put it to sleep. See if it happens then. If not, then you know it is one of those apps that is causing the problem. Then try the process of elimination. Also consider things running in the background, extensions and the like.
If it happens even when you have no apps running and have quit anything else running in the background, then try logging out and back in under a brand new user account. See if it happens in that situation. If not, then you know it isn't your computer or the operating system, but something running under your user account. Continue to investigate and try things.
Thanks Gary. I'll try your suggestions and let you know the outcome.
So it seems it was my impatience. Whereas my screen used to appear almost instantly from waking up from sleep it now takes a full minute to come alive. Does this mean it's about to fail?
Tony: It could mean it is about to fail (hard drive trouble, maybe). But it is much more likely that it is some piece of software on your Mac that is misbehaving. I'd continue to try the things I suggested as it may reveal the culprit.
Gary, can the console be used to investigate which apps were in use at the time of the shut down?
Mike: Probably not. Apps aren't necessarily writing data to log files so looking at the logs in the Console probably won't give you an answer. The data there is hard to decipher as well.
My iMac, May 2018, won't up but didn't recognize the mouse. I switched the mouse on and off several times.
Then I uplugged the iMac because there's no power button, counted to 30. It didn't wake up at all. Thank you.
Reginald: iMacs have a power button on the back. Is it an Apple wireless mouse? Make sure it is charged up -- plug it in to your iMac and charge it. Turn it on and then click it to try to get your Mac to recognize it.