I have a Simpletech external 250 HD 12 volt. Inside the case is a Sansung Model SP2514N (250GB/7200rpm/8m/pata). While wearing my dumb guy hat, I plugged it into a 19 volt power supply. Needless to say, it does not work now. What to do? Get a USB enclosure? Where do I get one? What kind do I need?