I'm stuck on one screen

I'm stuck on one screen

I’m stuck on this one screen on my Sony Bravia KDL 40 WE663 which I cannot get out of by pressing any button on my remote. The remote is working apparently. The screen has APPS + CHANNELS + RECORDINGS + MEDIA + SETTINGS + HOME SCREEN. None of these work. Is there a hidden button? I cannot get out by pressing ‘Home’ or ‘Return’. It’s driving me nuts and yes I have switched it off and restarted it. Thanks anybody in advance, James

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