Hello, I seem to have run into quite a problem. I have a WD external hard drive that uses a power adapter. The power adapter quit working, so I came across another one that had the same input, but a different output. Being in a hurry, I didn't look at the output. I simply plugged it in and the hard drive powered up. About five seconds later it powered off as if I had simply unplugged it. The output for the original adapter was 12V_ _ _ 1.5A. The one I tried using was 20V_ _ _2.0A. I have an identical second WD external hard drive I was running(which is why I tried to find another adapter since this second drive was in use), however I decided to unplug the second drive to use the adapter from it to test it on the drive that stopped working(since it was the right adpater and it was functioning). When I plugged it into the drive, I still got nothing. Could I have damaged the drive? If so, is this fixable? Thank you for your help.