How to troubleshoot the "NTLDR is Missing" error message in windows XP

When you start your Windows XP based computer, you may receive the following error message:

NTLDR is missing
Press ALT+CTRL+DEL to restart 

Why this problem?

This problem occurs if one or more of the following Windows boot files are missing or damaged:

• ntldr
• ntdetect.com
• boot.ini

How to solve?

1. Insert the Windows bootable CD/DVD or flash drive
2. Boot the computer from it
3. At the Welcome to Setup screen, press R to repair the Windows XP installation.
4. Now you can see the lis of windows installations . Type the number that corresponds to the Windows installation that you want to repair, and then press ENTER. For example, type 1, and then press ENTER
5. Type the Administrator password(if you dont have any passowrd,leave it blank), and then press ENTER.
6. Type map, and then press ENTER. Note the drive letter that is assigned to the CD-ROM drive that contains the Windows XP CD-ROM. Let it be E:\ (This may be different in your computer)
7. Type the following commands, pressing ENTER after you type each one. E:\ in the following commands is the CD-ROM drive letter obtained from step 6.
• copy E:\i386\ntldr C:\
• copy E:\i386\ntdetect.com C:\
8. Type exit and press ENTER. Then computer restarts.. Done!