|First of all, you need to boot from the Win XP CD. The easiest way to boot from a CD is to keep tapping F8 after you turn the computer on to get into Boot Menu and now choose CDROM from the given list.|
Then, follow the steps given in the website below to get into Recovery Console, so you can restore the missing file.
How to get into Recovery Console. Note that immediately after choosing CDROM from the Boot Menu you`ll need to press a key in order to start booting from the CD. (the first step of the given instructions).
After you get into Recovery Console, and perform all the steps given on the website, write the following:
expand E:\i386\ntldr C:\ ...and press Enter.
(replace E:\ with the letter of your CDROM drive).
If you're prompted to overwrite the file, press Y.
Tke out the Windows XP CD, type exit and then press Enter to restart your PC.
Assuming that missing or corrupt versions of the NTLDR file was your only issue, Windows XP should now start normally.
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