Dear Valued Customer,
I apologize to hear you are having difficulties with your VIZIO TV. Here at VIZIO we offer best in class technical support. I would recommend performing a power cycle on your TV. Please follow the steps in this order:
1- Power off TV
2- Unplug TV from outlet
3- Press and hold in the power button on the TV for 30 seconds (while it is unplugged from the wall)
4- Release the power button
5- Plug in the TV into a different outlet
6- Power the TV back on
There is also a factory reset option in your menu under the SETUP section. It will say either "reset all settings" or "system reset". I would recommend this option as well.
In your Advanced Video Settings there is a setting called ADVANCED ADAPTIVE LUMA. Please turn this off.