How to Reset an Apple TV

The second generation Apple TV digital receiver streams digital content such as YouTube videos, your iTunes purchases and Netflix streaming movies directly to your television. Occasionally during playback, the picture might freeze or possibly go blank. If this occurs, reset your Apple TV receiver using your Apple remote. This process works with both white and silver remotes.

...
Watch YouTube videos with your friends in comfort on your Apple TV.

Step

Press and hold the "Menu" and the down arrow buttons on your Apple remote simultaneously.

Step

Hold both buttons for about six seconds.

Step

Release both buttons when the LED light flashes on the Apple TV.