On startup, opens the Windows graphical user interface ( Windows Explorer) in safe mode running only critical system services. Shows configuration options for the operating system and advanced debugging settings, including: Starts Windows with basic services and drivers and the other services and startup programs that you select.
This mode can help rule out basic Windows files as the problem. Starts Windows with basic services and drivers only. Use this mode to start Windows after you’re done using the other two modes to troubleshoot the problem.
Lists choices for startup configuration modes: