Hey mate, I'm not 100% sure what the issue might be. What cloning software did you use? You need to expand on the process you went through to help identify what the problem might be.
To clarify, your old harddrive (HDD) contains your entire XP operating system. When the computer starts up it...
I just joined just to say thanks for such a handy tool! I'm not a very advanced computer user, but pretty good with Google and following instructions ;)
With this tool I now have a single nice boot menu with options for booting straight into (on my laptop):
Windows 7 64bit