Macbook Pro hangs a few seconds after booting up

[Kja03]

I have a Mac Pro mid-2014 running Big Sur. Only a few seconds after booting up it hangs on the login screen, unresponsive mouse. Or it hangs at 70-80% progress after entering the password. Interestingly it works perfectly in Safe Mode.

After trying a simple reinstall of the OS and that not solving the issue, I have now completely erased the SSD and then reinstalled Big Sur… effectively a fresh install of everything and it’s still hanging after just a few seconds of activating the screen. If I hold the power button down for a sec to put the screen to sleep and wake it up again the mouse is again active, then it freezes again!

I’m fresh out of ideas. Any help appreciated.

 

[Cory Cooper]

Hello and welcome.

Sorry for the delayed response.

It could be any number of things. Since it works in safe mode, it sounds like a software issue. However, since you did a clean install, it maybe a hardware issue that starts when the drivers are loading.

From memory, I recall a failing graphics chip/logic board could cause this.

Have you run Apple Diagnostics?
Have you trued closed lid mode with an external display?

C