I suspect power supply is 300 watt OEM that came with VAV case, roughly three years old. Entire scenario is;
Windows XP pro not starting- Reformat HDD array to reload windows. Get message "HDD damaged or corrupt". Suspecting a fried HDD, replace both drives with new. Get same message on format attempt. Suspecting RAID controller on MB, replace with new MB, new CPU and new RAM. With new HDD's (160gig SATA's)one is not seen in BIOS, with old HDD's (80gig SATA's) both are seen in BIOS, but get the same error message after formatting. Basically everything has been replaced but the power supply, I've just never experienced a power supply that runs, but can't power two HDD's...... I'm stumped, am I just over looking something? Arrrgggg......