Last night I upgraded my power supply in preparation on receiving my X2900 XT. I powered it on and immediately hard cracking noises and smelled something strange. I chalked it up to the new power supply being kicked on for the first time. I get to windows things are running fine. After a while I go to play some music and iTunes says it can't find my music folder. I look at sure enough my secondary hard drive does not appear. I then try a combination of things hoping I just hooked it up incorrectly. Nothing I changed got the drive working and it wouldn't even spin up or be detected byt he BIOS. So about 2 hours after the first drive failed I reboot the system, giving up hope. I hear the same cracking noise and then look over quickly to see white smoke coming from my only remaining hard drive. Upon taking it out of the case I discover that the same chip fried on both of them. Both were literally the same chip model SMOOTH something or another, which I learned was the motor control chip or something like that. I figured my DVD drive would be next, but it just wouldn't fry no matter what I did so I was confused. Its an old drive so I wasn't overly worried about if it had fried. I figured what the hell and went to Best Buy and picked up a cheap Western Digital Drive and a more expensive Western Digital drive. I figured if one would fry I'd prefer to have it be the cheap one then try to return it if it did fry, not risking the bigger one. It boots fine, installs Vista, and stays up and running for several hours without a problem. I've measured the voltages from the cables and as far as I can tell everything is proper for the power supply. I'm just wondering if perhaps both drives frying was a strange coincidence, bad luck, or a bad power supply? I should note that both fried hard drives were Maxtor's purchased at the same time.