Q: Guided access

Perform a "hard reset" on the device by pressing down and holding the home button and the sleep/wake button for up to 30secs. until you see a black screen with the Apple logo, then release.

Then test to see if it solved the problem.

For more information: http://support.apple.com/kb/HT5509

No. A device reset as described above will not remove any data, music, preferences or otherwise. Think of it as resetting your PC. Nothing is lost...except for maybe a minute of your time.

Maybe this will help?

https://discussions.apple.com/thread/5341855?start=0&tstart=0

Also go through the "More like this" list on the right-hand side of the page here and at the link above. Those additional topics like yours may help you.