Explain the systems startup process and include the files used by systems for configuration. Describe the order these files are checked.
Please clarify which system's startup process you want me to explain.
The system startup process of a Windows PC, please.
Sure, here is a brief explanation of the system startup process of a Windows PC:

1. Power-on self-test (POST): When you turn on a Windows PC, it first goes through a hardware diagnostic test called POST. This test checks if the essential hardware components such as the processor, memory, and hard drive are working correctly. If the hardware passes the test, the BIOS (basic input/output system) initializes the hardware and locates the boot device.

2. Boot loader: The boot loader program is responsible for loading the operating system into memory. On modern Windows systems, the boot loader is Windows Boot Manager (BOOTMGR) or the Unified Extensible Firmware Interface (UEFI) boot manager.

3. Kernel initialization: Once the boot loader has loaded the operating system into memory, the Windows kernel (NTOSKRNL.EXE) initializes and loads the drivers for the system's hardware components.

4. System services: After the kernel initializes and loads the drivers, the system services start. These services are programs that run in the background and provide support for system features such as networking, security, and printing.

5. User logon: Once the system services have started, Windows displays the logon screen. At this point, users can log in to the system with their username and password.

During the startup process, several files are used by Windows for configuration, including:

- BOOT.INI (Windows XP and earlier): This file contains the boot options for the Windows operating system.

- BCD (Boot Configuration Data) store (Windows Vista and later): This file contains the boot configuration data for the Windows operating system.

- SYSTEM.INI (Windows 9x and earlier): This file contains system settings and configuration data for Windows.

- WIN.INI (Windows 9x and earlier): This file contains user-specific settings and configuration data for Windows.

- REGISTRY: The Windows registry contains system and user settings and configuration data for Windows.

The order in which these files are checked during the startup process varies depending on the version of Windows and the boot process configuration. However, in general, the files are checked in the following order:

- Firmware settings: The firmware settings, such as UEFI, may contain boot configuration data that is used to locate the boot loader.

- Boot loader configuration: The boot loader configuration file (BOOT.INI or BCD) is checked to determine the boot options for the operating system.

- System services configuration: The system services configuration data is loaded to start the system services.

- User-specific configuration: User-specific configuration data (SYSTEM.INI and WIN.INI) is loaded to configure the user's environment.

- Windows registry: The Windows registry is loaded to provide the system and user configuration settings.