How To Unlock Ipad from Connect iTunes

iPad is locked if there were previous attempts of wrong password entry.
If you cannot remember the passcode, you will need to restore your device using the computer with which you last synced it.
This allows you to reset your passcode and resync the data from the device (or restore from a backup).
If you restore on a different computer that was never synced with the device, you will be able to unlock the device for use and remove the passcode, but your data will not be present.

You can place the device into recovery mode and attempt to restore the device again.
Use the following steps to place your device into recovery mode.

1. Disconnect the USB cable from the iPhone or iPod touch, but leave the other end of the cable connected to your computer's USB port.

2. Turn off the device: Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the the iPhone or iPod touch to turn off.
(If you cannot turn off the device using the slider, press and hold the Sleep/Wake and Home buttons at the same time. When the device turns off, release the Sleep/Wake and Home buttons.)

3. While pressing and holding the Home button, reconnect the USB cable to iPhone. When you reconnect the USB cable to iPhone, the device should power on.
Note: If you see the screen pictured below, let the device charge for at least ten minutes to ensure the battery has some charge and then start with step 2 again.

4.  Continue holding the Home button until you see the "Connect to iTunes" screen. When this screen appears you can release the Home button:

5.  If necessary, open iTunes. You should see the following "recovery mode" alert:


6.  Use iTunes to restore the device.