We also want to make sure the iPad isn't running too low on power. When the battery is close to being depleted, it can cause the iPad problems. If your iPad is connected to your computer, unplug it and check the battery percentage, which is located on the upper right hand side of the iPad next to the battery meter. If it is less than 10%, try letting the iPad recharge completely.
If the battery percentage is replaced by the words "Not Charging" when you plug the iPad into your computer, you will need to plug it into a wall outlet using the adapter that came with the iPad.