I installed Ubuntu, but the installation was primitive and probably the wrong edition. It was suggested it may have been the server edition. When I tried to re-install the proper edition, the installer did not detect windows 7 on my disk. Ubuntu is now installed on a separate partition. The ntfs partition is still intact and my windows os is visible as a device within the media folder of my ubuntu file system.
Try running the Ubuntu Boot Repair utility. If that fails, it may be necessary to create a custom Windows entry in
If that doesn't work, then it's conceivable it could still be rescued with some sort of tweak (but I can't help beyond this point); or you might have a more fundamental problem, like missing boot loader code in the NTFS partition itself.