I have no Desktop anymore. After booting up the process ends after the
background (Autumn) gets displayed. I have no Start Menu Bar, no icons on the
desktop. I can start some programs by using the Taskmanager (Ctrl + Alt +
Del) but I cannot start Windows explorer or any program that uses explorer to
start. Even when I browse to explorer.exe, I get a message saying
explorer.exe cannot be found. Can anyone help?

Thanks