Jpger - Athlon 950, 384 meg ram, Microstar International MS-6330 motherboard, Win2000 Adv Server. Made the machine myself. Just updated the BIOS.
Fuz - Can't find anywhere to turn on advanced power management. Compared good machine to problem one for Control Panel / Power Options. Bad machine seems to have fewer options. E.g. Good machine has a 'Power Buttons' option under Advanced.
-John