Last night was playing around on my iPad3, the battery level got down to 19% so I hooked to the charger for overnight. This morning, open it up from "sleep mode" & I've got a Message in the center of the screen saying something like "No memory room left in iCloud for Backup, buy more space in Settings - then the buttons CANCEL or SETTINGS". Since I've never consiously backedup to iCloud & don't intend to, I tried hitting the CANCEL Button... nothing... tried CANCEL again... nothing... tried SETTINGS... nothing. Oh crap, I thought. So, I closed the iPad to put it to sleep for a minute, reopened & the SAME THING happened. I then hooked the iPad3 to the charger cable hoping it would jolt it somehow out of it's froze mode... no luck. Then I tried holding down the Power Button to turn the blasted thing off & the "Slide to Power Off" came on the screen but it would not Slide when I drug my finger across it.... HELP! What now???