OK, If anyone can guide me on this one my son will be FOREVER grateful. (I just BOUGHT) For CHRISTMAS he got a new motherboard, processor and graphics card.... now XP won't boot up with the new parts installed....
... so I'm trying to do a "repair" as you are told "press R for repair" of the EXISTING xp files. Well, then it asks for you to identify which windows on the drive C. No problem. Then it asks for and Administrative password!!!!!!!!!!!!!!!!
What the...

I've typed in everything I can think of, just tells me I'm wrong and to reboot.

Why won't windows run?

When it tries to boot up it states "NTLDR missing"


Whatcha think? NTLDR is Missing
OK... I'll try if you will.
I figured that, what am I to do since windows won't boot up?Insert the Windows XP bootable CD into the computer.
When prompted to press any key to boot from the CD, press any key.

Once in the Windows XP setup menu press the "R" key to repair Windows.

Log into your Windows installation by pressing the "1" key and pressing enter.

You will then be prompted for your administrator password, enter that password.

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:\


Once both of these files have been successfully copied, remove the CD from the computer and reboot.