Then try again in a hour. Still fails? Try a full reset (Apple documents how and you can find it on the web.) Still fails, back to the Apple counter to see what they think.
I have settings on airplane mode, turned off screen last night and now the lock screen comes on, it says slide to open but won't turn on. Waits a second or so and goes black. Same for trying to shut it down.....says slide to turn off. Nothing slides. Any suggestions?