During the shutdown and the reboot of the experiment PC these versioned files are created:
/online_dir/MotorLogs/motorLogReboot.lis /online_dir/MotorLogs/motorShutdown.lis
The file
/online_dir/MotorLogs/ShutdownReboot.lis
is updated during the boot process. The differences between the Shutdown and Reboot files are appended. There shouldn't be any substantial differences.
You may use these files to investigate things.