I've just bought my M3 mini sd somewhere, and I put it in my gameboy (with minisd with some homebrew on it).
Then, I put my GBA on, after the screen with the letters Gameboy and nintendo, my screen is black.
After many times reseting, I got the menu on my screen, and I was able to launch some homebrew, it worked perfectly.
But now, it still only shows a black screen, sometimes not even the word nintendo, like there's no card inserted.
Could someone please help me?
P.S. When the card was working, I got an message about no ndssave folder, so that the save of *Some word".NDS could not be saved. This is strange as it's brand new and I don't even own a NDS