Can having an external mechanical hard drive too close to a PC power supply cause the hard drive to have data corruption? I have an old mechanical hard drive inside a hard drive enclosure, it is basically never turned on.. I have had it sitting under my pc's desk for a few weeks which would line it up very close to the underside of the power supply of my pc. I went to copy off a file and found it to be corrupted, I then tried a few more things stored on it and they are also corrupted.. I'm really stumped by this because the hard drive is functioning normal with no errors. The only thing I can think of is the proximity of the hard drive to the power supply for the past few weeks.