I have Windows 7 installed.
I install Ubuntu, so, I have the GRUB, but just works if I choose Ubuntu.
If I choose Windows 7 appears the message "BOOTMGR is missing".
If I fix the Windows 7 boot using the Windows CD, the GRUB disappear (of course).
If I fix the GRUB using the Ubuntu Live CD, the GRUB get back, but if I choose Windows... "BOOTMGR is missing".
What the way?