Grub ssould be installed to the MBR of the hard drive, not to the Ubuntu root partition.
You could boot from the Ubuntu live cd/usb and select "try Ubuntu" and when the desktop loads open up a terminal.
Then run (that's a lower case L, not a 1).
This will give details of your partition layout.
You need to identify which partition is your Ubuntu root partition.
You can then run
where /dev/sdXY is your Ubuntu root partition (eg /dev/sda5) and /dev/sdX is your hard drive (often /dev/sda). NOTE no partition number in the second command.
sudo mount /dev/sdXY /mnt
sudo grub-install --boot-directory=/mnt /dev/sdX
This should report that it has run with no errors.
If it does, reboot and you should then see Ubuntu boot directly. You can then open a terminal again and run when you should see the Windows Loader recognised. If so, reboot and you should then get a grub menu giving you the choice of which OS to boot.