I was afraid of that. There is a way i think but i all have it in Dutch so i'll have to translate so i hope you understand ; remove all disks and stuff, if only one os is installed ; while booting press and hold F8, you should get advanced boot options (?) use arrows to click on system receovery. If it isn't there, there are no safe points for recovery i believe.
If you have an cd you can also do it from there.