2016 L&K, started car last night and the main screen for radio, media, satnav etc was totally blank, I could still hear the radio or media but totally blank screen. Left car for a while then restarted it and everything was fine? Any advice appreciated.

You have forced a reboot with Power Button?

Thank you Cairus, you could be correct. What I forgot to say was that car always starts immediately but this time I had to keep my finger on the 'start' button for some considerable time, do you think that was the issue? Thank you for taking the time to reply.