And with the only symptom of 'nothing works', there isn't much to go on. IPad functions pretty well most of time, but there're some occasions - often attributed to the software glitches - when it grinds to a halt: the iPad keeps freezing or running extremely slow, app(s) stuck randomly or the update process is completely frozen. Whatever I do, it just keeps frozen and doesn't respond to any touch actions or button presses.
Going into the settings app, my iPad freezes up abruptly. Your iPad (Pro, Air, Mini) is frozen or not responding? Try the quick fix