Cannot Load XP Pro

I have this PC from Hell, The Intel Pentium III Processor went south, So I replaced the Mother Board and processor. The new mother board is a Shuttle AK32E. The new processor is an AMD Athlon XP1900+. I have a new WD. 20 GIG HD, when I try installing Win XP Pro I get this error message “\WXPP\KDCOM.DLL Could not be loaded”
I’ve replaced the memory, power supply, Cables. Anyone have any Ideas??