iPad crashes when backing up to iTunes
I just got a new iPad Air, and I need to back up my old iPad 3 to my Macbook so I can restore the new iPad Air from the backup. BUT....every time I try to back my old iPad up to my computer, my iPad crashes. I get about 75% of the way through the backup loading bar, and then my iPad goes black and takes five to ten minutes to reboot itself, and then the whole process happens again. I've seen multiple posts about iTunes crashing when syncing, but not the iPad itself. I have tried hitting both the back up button or just the sync button (it backs up during the process) but neither works. This same process also occurs when I try to update to iOS 8.3 (from my iPad, no Macbook or iTunes involved). How do I get my iPad to last through the backup process?
iPad, iOS 8.1