External drive not recognized by computer

WD External Drives WD Portable Drives
5

Sorry, haven’t been on in awhile - sent my drive back per WD’s suggestion - received the new one yesterday and still have same problem.  I brought the drive with me to work and plugged it into my computer and it recognized it immediately.  Working with Windows 8 here at the office and on XP at home - I am trying to upgrade to another computer hence buying the external hard drive to move my files over so I can copy them onto new computer.  I’m now thinking it has to be my USB drivers - ARRRRGGGHHHHHH