What is your problem, is it saying NTLDR is missing?
If so, throwing in your windows installation disk and running the repair tool is a great way to start. Or you could hop into the recovery console as well.
NTLDR (abbreviation of NT loader) is the boot loader for all releases of Windows NT operating system up to and including Windows XP and Windows Server 2003. NTLDR is typically run from the primary hard disk drive, but it can also run from portable storage devices such as a CD-ROM, USB flash drive, or floppy disk. NTLDR can also load a non NT-based operating system given the appropriate boot sector in a file.