My screen locked up to Itunes plug in after trying to update to ios8
After trying to update from IOS 7 I received a message screen to say ITunes could not see my device. The message also told me to restore and upgrade but it won't accept this and I can't get to the screen to restore to factory setting and back up. The ipad screen has the usb lead and iTunes logo on it all the time an d when I shut down and reboot it come back to that. Any suggestions please.
iPad, iOS 7.1.2