How can I transfer data on my External Hard Drive, if the computer is not recognizing my USB Mass Storage device? The device light up when plugged in, but the computer does not recognize it. I have switched cords of another external drive, but no luck.
A couple questions.
What operating system do you use?
Is this External Hard Drive brand new? Never used before? If this is the case, then it's quite likely that the computer does recognize it, but there are no partition(s) on it, so you'll have to go into Disk Management ( http://pcsupport.about.com/od/windows7/ht/disk-manageme... ), and make the necessary steps.
If it has been used before: does it work with other computers? Maybe try another USB connector.