Please help, Mac keeps turning off when trying to login

[colonel179]

Hello,

I need help. My mac has been having an issue lately when I used screen recording for my meetings. It turns off and then turns back on with a black screen and a message saying: Your computer turned off.

However, today when it happened, it doesn't let me log in. Whener the Mac reboots and gets to the login screen it turns off again with the same message and repeats it for four or five times until I get a back screen with a prohibited sign ? and can't do anything anymore but turn it off holding the power button.

This is weird because I can turn it on in recovery mode and safe mode (which I'm using right now to type this). I don't know why it works fine in safe mode but it can't go to the login screen normally without turning off.

I already went to Disk Utility and used First Aid, I already reinstalled the OS but no luck.

Would you please help me? I need my Mac working by tomorrow for work.

I have an old MacBook Pro 13" 2015 with Monterey installed.

Worked perfectly fine since last week when I had to start recording the screen and had this issue, but today started looping.

UPDATE: The situation is much worse! I did a clean install and now it just loops because the OS is not setup. I can still enter safe mode and it begins the installation setup, but it’s slow as a snail. Like I click and it responds at least 2 minutes later

 

[chscag]

If it works okay in Safe Mode that means that you have software or perhaps a kext loading in normal mode which is causing the problem. What have you installed lately? Are you running any AV software?

 

[colonel179]

If it works okay in Safe Mode that means that you have software or perhaps a kext loading in normal mode which is causing the problem. What have you installed lately? Are you running any AV software?

Thanks for replying.

I haven't installed anything lately. The screen recording I used is the one where you press Ctrl + Shift + 5.

Is there a way to get rid of this software or whatever it is that is loading from Safe Mode? A way to at least find out what it is?

 

[torenia]

Hello,

I need help. My mac has been having an issue lately when I used screen recording for my meetings. It turns off and then turns back on with a black screen and a message saying: Your computer turned off.

However, today when it happened, it doesn't let me log in. Whener the Mac reboots and gets to the login screen it turns off again with the same message and repeats it for four or five times until I get a back screen with a prohibited sign ? and can't do anything anymore but turn it off holding the power button.

This is weird because I can turn it on in recovery mode and safe mode (which I'm using right now to type this). I don't know why it works fine in safe mode but it can't go to the login screen normally without turning off.

I already went to Disk Utility and used First Aid, I already reinstalled the OS but no luck.

Would you please help me? I need my Mac working by tomorrow for work.

I have an old MacBook Pro 13" 2015 with Monterey installed.

Worked perfectly fine since last week when I had to start recording the screen and had this issue, but today started looping.

UPDATE: The situation is much worse! I did a clean install and now it just loops because the OS is not setup. I can still enter safe mode and it begins the installation setup, but it’s slow as a snail. Like I click and it responds at least 2 minutes later

Same as you , may I know you Monterey Version? My Version is 12.5.1

And did you fix the problem now?

 

[halledise]

Thanks for replying.

I haven't installed anything lately. The screen recording I used is the one where you press Ctrl + Shift + 5.

Is there a way to get rid of this software or whatever it is that is loading from Safe Mode? A way to at least find out what it is?

download 'kext utility'.
it's only a small app but fixes most issues by rebinding permissions

 

[torenia]

download 'kext utility'.
it's only a small app but fixes most issues by rebinding permissions

Thank you for reply <3, I already try...
but it's still happen again, my computer turned off when used screen recording

 

[torenia]

download 'kext utility'.
it's only a small app but fixes most issues by rebinding permissions

And this is my computer turned off report....

Is there master can guide me please? Very need help 🥺🥺🥺🥺🥺

 

[halledise]

And this is my computer turned off report....

Is there master can guide me please? Very need help 🥺🥺🥺🥺🥺

ummm. no.
just erase your mac totally and then start again.
are you for real?

 

[torenia]

ummm. no.
just erase your mac totally and then start again.
are you for real?

Yes, I already try many times, have Intel i5-2400s / AMD HD 6750M 512MB...
My imac is 21.5" 2011, with Monterey 12.0.1 (and 12.5.1).

Giving shutdown and restart....

But in safe mode, the screen recording is run good.

 

[halledise]

Yes, I already try many times, have Intel i5-2400s / AMD HD 6750M 512MB...
My imac is 21.5" 2011, with Monterey 12.0.1 (and 12.5.1).

Giving shutdown and restart....

But in safe mode, the screen recording is run good.

oh dear.
i'm thinking you may need to upgrade your hardware to a new mac.
2011 is older than my BMW

 

[halledise]

oh dear.
i'm thinking you may need to upgrade your hardware to a new mac.
2011 is older than my BMW

https://www.apple.com/au-hed/shop/buy-mac/macbook-air

 

[torenia]

oh dear.
i'm thinking you may need to upgrade your hardware to a new mac.
2011 is older than my BMW

thanks,
I know it's old,😅
but I want to look for other possible solutions,
Because in this mac 12.5.1 has been successfully google remoted, but it is invalid after setting it again....

 

[Fishrrman]

torenia wrote:
"Giving shutdown and restart....
But in safe mode, the screen recording is run good"

Sounds like a discrete GPU failure.

When you boot in "safe mode", the discrete GPU IS NOT USED. The iMac boots using the integrated CPU/GPU. So, even if discrete graphics aren't working, the iMac can still get started.

Only options I can see would be:
1. replace discrete GPU (if it's replaceable)
or
2. replace motherboard.

It's not worth spending money on an 11-year-old 21" iMac...

 

[davidlv]

thanks,
I know it's old,😅
but I want to look for other possible solutions,
Because in this mac 12.5.1 has been successfully google remoted, but it is invalid after setting it again....

You could try to boot in Safe mode and run the following command in terminal:

nvram FA4CE28D-B62F-4C99-9CC3-6815686E30F9:gpu-power-prefs=%01%00%00%00

This will disable the dGPU and allow the iGPU to function. Note that external display outputs are directly routed to the dGPU and therefore can no longer be used.