Oh! You mean those event logs! Sorry, but since the machine always reboots seconds after reaching runlevel 5, I don't have enough time to do anything on the command line. I could pull out the m.2 SSD and connect it to another machine, but it is in a hard-to-reach place.The events logs are probably in /var/logs/.
You can also look at system logs by entering:
var/log/syslog (this is a very long log)
The dmesg command may show you some things too.
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I'll first try switching the PSU. If that doesn't work, I'll try to get to the SSD.