Hello all, I found the thread because I was having similar issues. Two monitors connected, but even after I removed one monitor and a USB switch (which I need because of the irritating trend from Apple to provide fewer and fewer ports on their computers) it was still happening. In the brief moments between repeated crashing and self-restarting, I observed that my MacMini M1 (late 2020) seemed to be getting stuck trying to access the internet - network preferences would show a blank window saying "no networks", the antenna icon up in the menu bar would pulse for about 45 secs, then the whole thing would go dark and do a (silent) restart (light on Mac stayed on the whole time). I realized we had Access Control turned ON on our router (blocking/hiding our network from any outside devices, my Mini being one of the "allowed" devices). We now turned that off, and the issue seems to be gone.. I am continuing to experiment because I would like to use access control. As well as 2 monitors. [I like privacy. I like seeing what I am doing. And maybe even a directly wired printer? The audacity!! - ok enough snarkasm] - I hope we all can drill down on this together and find a final solution / problem definition to send to Apple!