If the Drive is setup for the Old Motherboard you are going to have to do this.
To reinstall Windows XP by starting your computer from the Windows XP CD, follow these steps:
1. Insert the Windows XP CD into your computer's CD drive or DVD drive, and then restart your computer.
2. When the "Press any key to boot from CD" message appears on the screen, press a key to start your computer from the Windows XP CD.
Note Your computer must be configured to start from the CD drive or DVD drive. For more information about how to configure your computer to start from the CD drive or DVD drive, see your computer's documentation or contact your computer manufacturer.
3. You receive the following message on the Welcome to Setup screen that appears:
This portion of the Setup program prepares Microsoft Windows XP to run on your computer:
To setup Windows XP now, press ENTER.
DO Not Press the first R press ENTER.
To repair a Windows XP installation by using Recovery Console, press R.
To quit Setup without installing Windows XP, press F3.
4. Press ENTER to set up Windows XP.
5. On the Windows XP Licensing Agreement screen, press F8 to agree to the license agreement.
6. Make sure that your current installation of Windows XP is selected in the box, and then press R to repair Windows XP.
Note If Windows XP was preinstalled on your computer, and you do not have the Repair option, contact your computer manufacturer to make sure that you have the installation CD for a repair install.
7. Follow the instructions that appear on the screen to reinstall Windows XP. After you repair Windows XP, you may have to reactivate your copy of Windows XP and you will have to apply Service Packs.
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You will also need to install your new Motherboard Device Drivers.
When you are up and running Backup all of your Data.
