XP could be corrupt or the NTLDR file could be corrupted. Computer could be
booting from non-bootable source.
1.. Insert the Windows XP bootable CD into the computer.
2.. When prompted to press any key to boot from the CD, press any key.
3.. Once in the Windows XP setup menu press the "R" key to repair Windows.
4.. Log into your Windows installation by pressing the "1" key and
pressing enter.
5.. You will then be prompted for your administrator password, enter that
password.
6.. Copy the below two files to the root directory of the primary hard
disk. In the below example we are copying these files from the CD-ROM drive
letter "E". This letter may be different on your computer.
copy e:\i386\ntldr c:
copy ntdetect.com c:
7.. Once both of these files have been successfully copied, remove the CD
from the computer and reboot.
