Have TV Questions? Ask a TV Technician
You can do this through the Menu button on the TV itself.
Navigate using the Prog buttons and select using Input select/OK.
Go to Settings > All Reset which will launch Auto Start Up
Let me know if that helps.
If my answer has been useful, a positive rating would be appreciated please.
Yes, do try powering off and on at the mains electricity.
Then, does the TV have a Menu button on the top?
If so try pressing that and let me know what you see.
Do you need any further assistance with this?
If not and my answer has been useful, a positive rating would be appreciated please.