Final answer:
To reset a Vizio TV without a remote, locate the physical buttons on the TV, typically the power and volume down buttons. Press and hold these buttons for 10 seconds, release, and then press the input button for another 10 seconds to factory reset the TV.
Step-by-step explanation:
To reset a Vizio TV without a remote, you can often use the buttons on the TV itself. Most Vizio TVs have a physical button that you can use to reset the TV. This button is typically located on the back or side of the TV. For a full factory reset, you will generally need to locate the power button and the volume down button on the TV. Press and hold the volume down button and the power button simultaneously for about 10 seconds until a bar appears on the TV. When you see the bar, release the buttons, and then press the input button for another 10 seconds.
This should perform a factory reset and turn your TV off. You will then need to turn the TV back on and proceed with the initial setup. Keep in mind that the exact placement of these buttons and the steps might vary slightly depending on your Vizio TV model. Check your TV manual for model-specific instructions if these steps do not apply to your TV.