System won't boot

This could happened if you installed or upgraded over Windows 9X,which was installed on a FAT 32 file system
Insert a Windows 9X startup disk in floppy drive
Boot computer and at command prompt type SYS C:,when the process completes
Reboot computer without startup disk

Try following the instructions in the Technet article "How to Create a Bootable Disk for an NTFS or FAT Partition (Q119467)":
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q119467
(please remove any spaces)

It will tell you how to make a NTFS boot floppy that you can use to boot Win2K when you get the NTLDR error.

hope this helps