I recently got a Samsung 250 gb SSD in addition to my 1 tb HDD for my desktop. I installed windows new on the SSD intending to boot from it however when I try to then put my HDD in as well, my computer will not turn on. The lights on the motherboard come on when it is plugged in, but when I press the power button, the fans and lights come on for a second and then it does nothing and will now power up. Could this be a lack of wattage in PSU (550 W)? Halp.