Stuck in a weird resume loop

[tomh79]

While playing Chrono Trigger, I tried to save a state. But the „saving xx%“ message never completed. So I tried to quit the game which did not work. Force power off worked but any time I power on the device, I‘m back in the game which I cannot quit. Quit does nothing. Going to the Retroarch Menu and select „Quit Retroarch“ freezes everything and I habe to force quit again. Which File do I have to delete to nake the OS boot normally and not directly into the game? Thanks!!