Black Screen On Monterey

I'm sorry I delayed starting this thread. Last Sunday my screen turned black with a message of some problem where the OS had to shut down. I guess this is Apple's equivalent to the Windows Blue Screen. My newly updated OS is 12.6.2. I took off the app Publisher Lite, believing that it was the only one possible that could have caused it. After that, to investigate why such documents as greeting cards get printed greyscale, I opened the app HP Smart Print. After I performed the operation to clean printheads, the screen went black without any messages. Again, I had to power up the computer. My Launchpad only has enough apps to occupy one page. To prevent this from recurring, how can I diagnose what is caused this shutdown? Currently I limited my Office functions to Google Drive, having eliminated such programs intended to replace the paid Office programs. Up until a couple of weeks ago, I had LibreOffice, now gone. Thank you. This is the most serious problem that ever occurred on this Mac since I acquired it.