Get ya a good PSU, and grab you a WD Purple if your going to be writing and reading constantly to the disk. And keep the kid away from the PC... While a few flat out unplugs of the cable wont harm it, over and over again will take a serious toll on the PSU, and it will eventually take a toll on the rest of your hardware. I can count at least 30 times in the last year alone that we have suddenly lost power, not a single hiccup, but, eventually that will damage the PSU since it's still trying to supply power, and can't because of the sudden loss.