There should be a boot.ini file in C:. It is hidden so make sure you have Windows Explorer set to show hidden files. Of course, you cannot get to Windows Explorer, so....
Usually if the boot.ini file is set up wrong, a different error is given. Maybe you are getting that error because the boot.ini file is not there. I would think that if you put the boot.ini file in C:\ that would take care of the error.