Upgrade to macOS Monterey: Mac no longer works (+ possible solution)

It is gibt eine Vielzahl von older Apple computersthat can be equipped with macOS 12 Monterey. Most of them do not have an M1 chip, but an Intel CPU. These models currently seem to be particularly prone to an error that would render them unusable after or during the installation of the new system. The screen then remains black, the computer can no longer be used and appears to be broken. But maybe you haven't completely shot your Intel Mac with the Monterey upgrade ...

Some users report that after upgrading to macOS Monterey, the Mac stops responding and appears to be broken. The fact that the Mac no longer works doesn't have to mean that it is broken because of macOS 12 Monterey. There is still a solution ...
Some users report that after upgrading to macOS Monterey, the Mac stops responding and appears to be broken. The fact that the Mac no longer works doesn't have to mean that it is broken because of macOS 12 Monterey. There is still a solution ...

After upgrading to macOS Monterey: Mac no longer turns on, no longer reacts

The official upgrade to macOS 12 Monterey for all compatible Macs has been available to all users free of charge since last week. Since then there have been a few reports of errors, bugs and problems here and there. You can find a summary of frequent problems or problems that have arisen with previous upgrades here: macOS 12 Monterey Problems and Solutions. 

With today's update, we have added another and quite serious problem: the Mac no longer starts up after the upgrade to macOS Monterey and / or already causes problems during the installation. Among other things MacTechNews points in one Article to corresponding reports from users.

Possible solution: Intel Mac with T2 chip no longer works after Monterey upgrade

I found a possible solution in the comments of the linked article detailing cases of Apple computers seemingly scrapped by Monterey. This is called "Apple Configurator 2" and is software from Apple. In order to use it to revive the seemingly broken and no longer usable Mac, the program must be installed on another Mac and the two devices with one USB-C cable get connected. 

This only works if the Mac in question has a T2 chip in addition to an Intel processor. We have summarized which Mac, iMac and MacBook models these are and what else you need to know here: Apple Configurator 2 - Make a "dead" Intel Mac with T2 chip usable again. If you have to go through the whole process, we wish you every success!

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