Help! How can i remove the lock sign on my ipad3? it can't open, rotate or turn to next page because there is a lock sign at the bottom?

I'm not sure exactly what you are seeing but .....

If you see a lock icon in the upper right corner of the screen - then the screen orientation is locked.

Try the side switch above the volume rocker first and see if that unlocks the screen. If that doesn't do it, double tap the home button and swipe to the right and look for the lock icon all the way to the left.

If the iPad is not responsive and you cannot slid to unlock the screen - try this.

Reset the iPad by holding down on the sleep and home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons.

See here http://support.apple.com/kb/HT4085

If necessary, Try a Reset [Hold the Home and Sleep/Wake buttons down together for 10 seconds or so (until the Apple logo appears) and then release. The screen will go blank and then power ON again in the normal way.] It is app and data safe!

You are welcome!

thanks, I've tried all of this. I remember my pass code, I just don't have a place to enter it.