Looking sad so far. The system is a 2018 #dell XPS15. #Ubuntu installed fine. I could install all the software I needed. Everything was fine. It prompted a firmware update. It ran fine. System rebooted. Used it. Worked fine. Tried to boot today. Normal miscellaneous screens showing driver loading. Then nothing. Blank screen. I think it messed up BIOS firmware. I followed the BIOS recovery instructions. Nothing. Black screen. I migrated to Ubuntu because I don't want a new computer.