I have an external hard drive which is less than a week old, but will no longer show up on my computer when connected. The light on the drive still comes on but it doesn't show on my pc despite having tried various different power supplies and different usb ports on two computers. I think the drive may still be working and the problem is with the power supply in the enclosure, but I would like to return it under warranty as I'm not sure I trust this brand of drive now.
Is it possible to delete whatever I copied to it before returning? Some of the files contain passwords and other sensitive data so I'd prefer wiping it if possible but I'm not sure how.
Thanks for any help.