I used Wubi to install Ubuntu 12.04 LTS on two machines. I used it for a couple of years, loved it, almost never booted into Windows. An option to upgrade to 14.04 appeared so I didn't hesitate to upgrade. It failed, and now I can't even seem to install 12.04, it also fails. I've tried many options for installing that I found on the Ubuntu site, they also all fail.
What would cause a machine that I dual booted for years not be able to install 12.04 LTS?