My son's iPad 2 has been without sound for 2 days. I have: 1. Held the home button and power button down, nothing 2. Reset the settings, nothing. 3. The mute button above the volune control is not activated. I thought maybe he has done something to it because he is 3 yrs old; however, if I go to sounds, and adjust the alerts volume, sound comes out. When I use the volune control on the side, the image of the volune does not appear but if I activate the mute button the image appears and shows me muting it. HELP!!!