Installing Windows7 after Ubuntu 14.04, other recommendations not working

Solution 1:

Since the automatic ways aren't working, I tried googling for "manually add windows to grub" and found this.

The linked answer suggests the following:

The first step is to edit /etc/grub.d/40_custom (using SUDO) and add the following lines to the bottom of the file:

menuentry ‘Windows 7′ {
set root='(hd0,msdos2)’
chainloader +1 }

Then running

sudo update-grub2

Sadly I don't have personal experience with this solution though, just thought it might help. (it's also kind of old)