The Panasonic Viera TC-L32C12 defaults to store mode, which launches an introduction of the TV's capabilities. Store mode is intended to help retail stores sell the TV by demonstrating its features. This function is beneficial to the store, but disruptive to home users. You can turn off the introduction by setting the TV into home mode. Once the TC-L32C12 is in home mode, you won't need to reset it again.
Turn on the TV.
Unplug the TV from the electrical socket for at least 15 seconds, then plug it back in.
Press the "Power" button on the remote to turn the TV back on. A menu will pop up on the screen asking you to select your viewing environment.
Press the left arrow button on the remote to select "Home" and press the "OK" button.