It could be a stuck button on the remote.
Try this:
Turn off TV.
Turn on at the TV, not the remote (push screen just above the Blue Light thing at the bottom if no Power button is displayed). If you have sound it was the remote.
Clean the remote of any sticky stuff with compressed air or very lightly with alcohol. Do not use WD-40, it will stick again.
Good luck. Please rate this answer 4 stars if helpful.
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