I have a 5 year old dekstop with 200GB HDD and 300W PSU. They both really need to be replaced, because the HDD is noisy and PSU can fail at any time. Would a failed PSU damage the new HDD? Need some advice on that. I will be upgrading the whole system, but right now I'm short on money. I can buy a $70 PSU Antec Earthwatts 380W or a $65 1TB Samsung Spinpoint F3 HDD. I'm not short on space, but it would be great to have more. Besides, my hdd is relatively slow.