How to Reset an Insignia TV
Including parental controls, display adjustments and sound settings, your Insignia TV offers a wide variety of ways to customize the viewing experience -- but you might end up making it worse instead of better. For those situations, the Reset option can be a quick fix, as it restores the TV's from-the-factory default settings. Selecting this option erases all customizations, including parental controls, so you’ll need to go through the first-time setup all over again after resetting the TV.
Press the "Menu" button on the Insignia remote control.
Use the arrow keys to highlight "Settings" and then press "Enter" to select it.
Select "Reset to Default" at the bottom of the list of settings.
Select "Yes" in the confirmation dialog to reset the TV.
Press "Exit" to exit the menu.