TV will not stay on HDM1 when turned off at night Keeps going to TV

Hello. The troubleshooting guide in the Appendix of the appliances' manual suggests the following:
1.) Make sure you have selected the proper input as TV and not PC.
2.) Since your system is HD 720P, the maximum resolution should be 1366 x 768 at 60 hertz.
3.) You may have to upgrade the driver of the graphics card
4.) Contact their Customer Service Center for immediate assistance
5.) Bring the set to an authorized repair center.
I hope this helps. Best wishes.

How To Fix Wonky HDMI Connection

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