Why is my screen blue with no picture or sound?

I turn my TV on with a remote and the screen is just all blue and it will let me turn the volume up and down and mute, and on and off that's it. The TV itself only has one button on it and it just turns it on and off. I've already tried to unplug the TV from the wall outlet for a few seconds and plugged it back in and tried it again and still nothing just a blue screen. I tried to hold the power button on the TV for a few seconds and still nothing I don't know much about it because I'm in a motel room and the front desk isn't answering right now what do I do????