I hit something on my remote last night and now I have no picture on my tv screen. Just a small blue square with a grey circle inside it and a black cross in side the circle.
My guess would be your TV is now on the wrong input.
Look for a Source or Input button on the front/side of your TV, and confirm you are still on the correct one (Or the remote that came with your TV)
Were you able to get picture back after trying Kevin's suggestion here?
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