u/Sad-Consequence-8920

Hi all, I've had my LG OLED TV a couple of years and its started showing a 'circle of doom' a few seconds after I turn it on or change input. The rotating 'wait' circle flashes a few times before the screen goes blank, and I have to reselect the input to get the picture back. I don't know if this has anything to do with adverts (which Ive turned off) or maybe I need to do a hard reset (anyone know how?), Thanks