Restart the iPad by holding down on the Wake/Sleep (On/Off) button until the red slider appears and then slide to shut Off. To power up hold the Sleep/Wake button until the Apple logo appears and let go of the button.
Reset the iPad. Note: Reset your device only if it is no longer responding and Restart does not work.
1. Begin by pressing the Wake/Sleep (On/Off) and Home buttons at the same time (for about 10-15 seconds). The Wake/Sleep button is the one on the top right corner of the iPad. The Home button is the round one at the bottom center of the iPad's front
2. Continue to hold these buttons until one of two things happen: either the screen will flash and go dark, or a red slider will appear at the top of the screen
3. If the slider appears, you can slide it to the right to turn off the iPad (or tap the cancel button if you change your mind)
4. When the iPad's screen goes dark, the iPad is off
5. Restart the iPad by holding down the Wake/Sleep button until the Apple icon appears. Let go of the buttons and the iPad reset will be complete.
Resetting the iPad shouldn't normally cause you to lose and data or settings.
How to Restore iPadhttp://www.ipadtomactransfer.org/ipad-tips/how-to-restore-ipad.html
Cheers, Tom 😉