A few things to try:
If it's a recent DFI mobo in that computer,use a slipstreamed SP2 XP Professional,especially if the mobo has pci-express slots.
If it's no DFI,check your ram...could also be a bad ram slot...
I had a similar error when I took out and replaced a DIMM memory on a m/b that's very sensitive to taking out memory. A few reboots into safe mode fixed everything.
Hybrid Mode
