Hi there! Thank you for sharing your detailed post and being so thorough with the diagnostics. It’s clear you’ve put in a lot of effort into exploring the root causes of the shutdown issue with your server. You're making great progress—even if it doesn’t always feel that way yet. Just a little encouragement: keep testing systematically (monitor outputs, clean firmware/BIOS settings, minimal plugins, etc.). Often, the solution is hidden in one of the small settings that doesn’t seem important at first glance. You’re on the right track and you’ll get there! If you like, I’d be more than happy to dig into your specific BIOS options with you and we can map out together what to check next. You’ve got this!