Just another poor working from home person who's Mac has been 'bricked' - or whatever the correct definition is - by attempting to install Monterey. But the interesting thing is that after a call to Apple Support, Ireland, the told me that they had absolutely no knowledge of any problems caused by the Monterey OS and that I was the very first call that they'd had about this! Either Apple is very bad at keeping their Apple Support staff informed or someone is lying, I wonder? They even gave me the advice and a link that the only course of action open to me was to try to claim under UK Consumer Law. I had had a previous online chat during which I was advised that if I were to choose to send it back to Apple for repair I would be required to pay £430, just for it to be looked at! Ho hum