I had the same problem, here the FIX

Boot the W xp CD, en E for repairconsole
To replace damaged ntldr and ntdetect.com you can copy fresh files from the XP CD using the COPY command. At the Command Prompt type the following
COPY D:\i386\NTLDR C:\
COPY D:\i386\NTDETECT.COM C:\
(d: = cdrom, or whatever you use)

type FIXBOOT ...

Reboot and ENJOY

Anders W. Røine
DMZ data as
www.DMZ.no