iPad cannot be restarted

I have just upgraded iPad OS to 4.3 and synchronized it with my Macbook (Snow Leopard Mac OS 10.6.6).

Then I restarted the iPad and it was frozen. I did a hard reset by pressing and holding down on the sleep button at the top of the iPad while holding down on the home button at the bottom, until the Apple logo appears and the iPad restarts. And the iPad works fine again.

Here are some tips for iPad that might be useful:

  1. http://discussions.apple.com/message.jspa?messageID=13062617
  2. http://www.knowyourmobile.com/appleiphone/ipad/ipaduserguides/458098/how_to_fix_a_frozen_ipad.html
  3. http://discussions.apple.com/message.jspa?messageID=11544231
  4. http://www.technixupdate.com/solved-ipad-hangs-not-responding-unable-to-unlock-does-not-wake-up-does-not-return-to-home-screen/
  5. http://support.apple.com/kb/ht4097