boot from windows xp cd and go to recovery console mode
give the administrator password
c:\windows>
prompt will come
come out from widnows with the help of command
c:\windiws>cd ..
c:>

go to cd prompt d:
d:>cd i386
d:\i386>copy ntldr c: enter

d:\i386>copy ntdetect.com c: enter

restart u r computer 

problem fix

copy this file another computer & paste it on missing 
computer

Therr is no such file in win xp

Ntfldr.exe is not a correct word,no such a file in 
windows,if ntldr is missing means we can fix it by
insert the Windows XP bootable CD into your CD-drive and 
reboot your computer. When your computer prompted a message 
to press any key to boot from the CD, press the any key. 
Once in the Windows XP setup menu press the "R" key to 
repair Windows and now log into your Windows installation 
by pressing the "1" key then pressing enter. 
Here you will be prompted for your administrator password, 
enter your that password then copy the below two files to 
the root directory of the primary hard disk. In the below 
example you are copying these files from the CD-ROM drive 
letter "E" to drive c. This letter may be different on your 
computer.
  copy e:\i386\ntldr c:\
copy e:\i386\ntdetect.com c:\

Once copy both files, remove the CD and reboot your system.

In windows XP NTLDR is the file runs in while system 
booting.

NTLDR (abbreviation of NT Loader) is the boot loader for 
all releases of Microsoft's 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.

NTLDR requires, at the minimum, the following two files to 
be on the system volume:

* NTLDR, which contains the main boot loader itself
* boot.ini, which contains configuration options for a boot 
menu.

Easy method was copy from other system and connect it has a 
secondry and paste the file in correct location.
Then restart the system it will fix and works.