I can't go in my setting to set Icloud because my screen it locked at the error message :
Icloud Backup
This ipad hasn't been backed up in 14
weeks .Backups happen when this
Ipad is plugged in, locked , and
connected to WI-FI.
I can't even close my Ipad please help me , Ill throw my Ipad soon at the windows
iPad Mini, iOS 8.1.3
Have you tried a soft-reset ? Press and hold both the sleep and home buttons for about 10 to 15 seconds (ignore the red slider if it appears), after which the Apple logo should appear - you won't lose any content, it's the iPad equivalent of a reboot.
When it's rebooted you can force a backup via Settings > iCloud > Backup
Hold both Sleep and Home buttons for 10 seconds until your iPad restarts, so you will be able to use the device again.
Screen locked at Icloud Backup Error
