As you know, I am working on a portable DreamCast project.

Up to a couple of hours ago, all was working fine, however now, when I turn on the system, I get past the boot "Dreamcast logo", swirl, etc, however, whilst the disc still is spinning, the system goes into the system menu and not the game.

What causes this? May have been a short, however asking in case anyone has ideas, and how to remedy the issue short of getting a new console and starting again...