itunes says not enough memory for ipad backup
I recently had to reload Windows 7 on my laptop. I re-installed iTunes and tried to backup my 32GB iPad, but iTunes won't backup or sync the iPad because it says the computer doesn't have enough memory. My laptop shows over 200 GB on both the C and D drives. I tried uninstalling iTunes and re-installing it, but I get the same message. Any ideas?
iPad 2, iOS 8.2