As Apple iPad hard reset

Restarting and Resetting iPad

Reset iPad: Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears.

iPad Still Doesn't Respond After Reset

Reset iPad settings. From the Home screen choose Settings > General > Reset > Reset All Settings. All your preferences are reset, but your data and media aren't deleted.

 Resetting iPad

Reset all settings: Choose General > Reset, then tap Reset All Settings.

All your preferences and settings are reset. Information, such as your contacts and calendars, and media, such as your songs and videos, aren't deleted.

 

Erase all content and settings: Choose General > Reset, then tap "Erase All Content and Settings."
This resets all settings to their original values and erases all your information and media.

Updating iPad

Make sure your computer has an Internet connection and that you’ve installed the latest version of iTunes from Apple website
Update iPad:
1 Connect iPad to your computer.
2 Select iPad in the iTunes sidebar, then click the Summary tab.
3 Click "Check for Update." iTunes tells you if there’s a new version of the iPad software available.
4 Click Update to install the latest version of the software
 

iPad recovery mode

With the iPad powered off, press and hold the Home button, connect the USB cable from PC/Mac to iPad.

Continue holding the Home button until you see the "Connect to iTunes" screen, then release the Home button.

Open up iTunes to see iPad in recovery mode.