With the new motherboard in the system, proceed with the instructions "Replace a failed motherboard", as you have already replaced the motherboard.
"Replace the existing motherboard with the new motherboard.
Insert your Windows CD in the CD-ROM drive or the DVD-ROM drive, and start the computer from the CD.
When you are prompted To set up Windows now, press ENTER
, press ENTER
Setup looks for any previous installations of Windows XP on the hard disk and then displays a list of any previous installations that it finds.
Use the arrow keys to select the installation that you want to repair, and then press R
to select the To repair the selected Windows installation, press R
This will start the repair of your previous Windows XP installation."
Edit: Further information on attempting XP re-installation:http://support.microsoft.com/kb/978788
Edited by Platypus, 04 September 2010 - 05:56 PM.