A tela de logoff do Windows 8 é a janela superior e é por isso que você não consegue ver o Windows sendo iniciado durante o Logoff.
Uma correção que foi sugerido para trabalhar é ativar a política de grupo Display instructions in logoff scripts as they run
em User Configuration/Administrative Templates/System/Scripts
Description
Displays the instructions in logoff scripts as they run.
Logoff scripts are batch files of instructions that run when the user logs off. By default, the system does not display the instructions in the logoff script.
If you enable this policy, the system displays each instruction in the logoff script as it runs. The instructions appear in a command window. This setting is designed for advanced users.
If you disable this policy or do not configure it, the instructions are suppressed.