Unraid not starting / can't sign in. Can get to the boot menu and select gui mode and after a few minutes the screen goes black. SSH is not on so can't try that.

syslog syslog-previous tower-diagnostics-20250520-0807.zip

If you select to boot to console mode can you then log in? If able to login there then using the ‘diagnostics’ command will create the diagnostics zip file in the ‘logs’ folder on the flash drive and uploading that herd might give a clue as to what is going wrong.

Here ya go

tower-diagnostics-20250607-0717.zip

Nothing obvious in the diags, there may be a corrupt config file, you can try redoing the flash drive, backup the current one first and then recreate it using the USB tool and just restore the bare minimum, like the key, super.dat and the pools folder for the assignments, also copy the docker user templates folder (\config\plugins\dockerMan\templates-user), if all works you can then reconfigure the server or try restoring a few config files at a time from the backup to see if you can find the culprit.