|Sorry for delay - I've been away from home and my computer.Yes, I did mean external hard drive. I have three external hard drives, all Western Digitals; one of them (the oldest) works perfectly with both my old HP Compaq / Windows 7 computer and my new Sony Vaio / Windows 8.1 computer. The other two were working until about four weeks ago, but then stopped and do not appear in the Control Panel - Hardware/Devices window. I have one of the non-working drives with me at the moment - a WD Passport, model WD1600U017-005.|
.That's about all I can tell you. Believe me, I do appreciate your help, I just wish that I was a bit more tech savvy and able to answer your questions clearly.
Oh yes, there is one more thing - a friend of mine attempted (unsuccessfully) to use one of the drives with his Mac computer. Would this be the cause of my problems? He assures me that he did not tinker with the drive - he merely plugged it in and found that it didn't function.