Atari 400
Trinitron Color TV
Atari 1050 Disk Drive
If the disk drive is on and a disk is in the drive, the Atari 400 will boot from the drive automatically when it starts up. If the drive stops working and the screen is blank, or shows just the prompt, then something may be wrong with the chosen disk. If the screen shows BOOT ERROR, then the disk is likely not formatted for the Atari. The disk you boot should prompt you for the next step (selecting a game, flipping the disk to load the rest of the program, etc.).
Zork II
Zork III
Leather Goddess of Phobos