While updating to the latest version of TotalFinder, my computer became unresponsive. I manually powered it down and now my Macbook Pro won’t power on at all. Completely bricked.
It’s a mid-2015 Macbook Pro running BigSur. Ran fantastic prior to this issue.
I fixed this by doing a System Management Controller reset.
The issue happened while attempting to update Total Finder.
I clicked a dialog box to update Total Finder. I clicked “Yes” when asked “Install and restart?” But after several minutes, the computer still hadn’t restarted (though the computer was still functioning as normal). So I clicked “Restart” from the Apple menu. The computer powered down and started to come back up, but only to a black screen – for a long time. So I manually shut it down, unplugged all the accessories, and tried powering it up again. Then it wouldn’t power up at all.
A friend hypothesized that maybe it had to do with System Integrity Protection and the Total Finder update getting interrupted. I don’t know know enough about this to know how likely that is. But it seems a more plausible explanation than a hardware issue. The computer was running fantastic before this and seems to be running perfectly now after the System Management Controller reset.