My PC won't recognize my wd passport

Just to be sure, don’t use any USB extension cables or USB hubs to connect the HDD, another option that you have is to use DLG to write zeros, check the link below for the steps. 

http://wdc.custhelp.com/app/answers/detail/a_id/1211/session/L3RpbWUvMTM1MDY1OTQxOS9zaWQvQzNRbks2OWw%3D