
If something is not quite right with your iPad, restarting or resetting it will solve problem in most cases. If the iPad is not turning on it is not responding, following steps must be carried out. But before carrying out any of these steps, make sure that you have latest version of iTunes installed.
Rest your iPad
For resetting an iPad, all one has to do is press sleep/wake and Home button for 10 to 15 seconds until the logo of Apple re-appear.
Restart your iPad
Restart your iPad by pressing sleep/wake button.Contact Apple Support
All the information on turning an iPad on can be found on Apple’s own support web site. The web site also contains all the error codes along with the details on those errors.Sometimes it may also happen that even after resetting your iPad doesn’t start. Then under such condition, you should try above two steps by connecting your iPad to the computer, i.e. first press wake/sleep button for at least 10 seconds until Apple logo appear on screen; if it doesn’t make any difference press wake/sleep button and home button at the same time and hold these buttons for 10 seconds.

Submitting your device in Apple iStore to repair, should be the last resort, if nothing is turning out to work. Although the last sentence may not be needed at all, one must be ready for it as nothing in this world is perfect and thus not even Apple can make fault free devices.