PC Keeps going to a blue screen that says windows has been shut down from file NTFS.SYS How do I get to window

How do I get back to the windows screen? Every time it starts to load windows, I get a blue screen that has different error messages. I do NOT have the original Windows XP CD to load it, but I do have the OS disc. I don't know what to do. Thank you! I think I need to fix the file, how do I do it?