That's very unusual; the two motherboards must have been close to
identical.
No hardware or Windows problem. This is actually normal behavior.
Normally, and assuming a retail license (many factory-installed OEM
installations are BIOS-locked to a specific motherboard chipset and
therefore are *not* transferable to a new motherboard - check yours
before starting), unless the new motherboard is virtually identical
(same chipset, same IDE controllers, same BIOS version, etc.) to the one
on which the WinXP installation was originally performed, you will need to
perform a repair (a.k.a. in-place upgrade) installation, at the very least:
How to Perform an In-Place Upgrade of Windows XP
http://support.microsoft.com/directory/article.asp?ID=KB;EN-US;Q315341
Changing a Motherboard or Moving a Hard Drive with WinXP Installed
http://www.michaelstevenstech.com/moving_xp.html
The "why" is quite simple, really, and has nothing to do with
licensing issues, per se; it is a purely technical matter, at this point.
You've pulled the proverbial hardware rug out from under the OS. (If
you do not like -- or get -- the rug analogy, think of it as picking up a
Cape Cod style home and then setting it down onto a Ranch style
foundation. It just is not going to fit.) WinXP, like Win2K before it,
is not nearly as "promiscuous" as Win9x when it comes to accepting any
old hardware configuration you throw at it. On installation it
reasons that the entire WinNT/2K/XP OS family is so much more stable
than the Win9x group.
As always when undertaking such a significant change, back up any
important data before starting.
This will also probably require re-activation, unless you have a
Volume Licensed version of WinXP Pro installed. If it is been more than
120 days since you last activated that specific Product Key, you will most
likely be able to activate via the Internet without problem. If it is
been less, you might have to make a 5 minute phone call.
--
Bruce Chambers
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