The system image will contain a set of software common to computers used on the network. Using one of these images the operating system can be installed on a hard drive without supervision by copying files to the drive. The startup process3 of a modern computer requires several steps. A power-on self-test (POST) is used to test the system before programs are loaded. POST will test your memory, video, hard drives, and CPU (central processing unit) for compatibility and to see if they are working properly. Programs start from ROM (read-only memory) stored on the computer's main board. The BIOS (basic input/output system) is loaded into the system's memory and will access programs on disk drives or hard disks. The operating system will load from a disk drive or SSD using the Windows boot manager. The operating system will continue the boot process with the Windows boot loader during a normal startup. When the operating system starts, programs will launch in a specific order. This is determined by the authors of the operating system. Services and programs start as expected unless problems are detected by the operating system programming. After the kernel and all other boot programs are loaded, the login phase occurs