I have just recently got the 1TB WD. Used it for a day, and this morning when i went to add more things onto it, it does not appear in "my computer" I have tried plugging it into all three of my usb ports and still nothing. I have also gone into the disk management and the disk it shows up in it says is unreadable, therefore unable to change the disk letter. I have plugged it into another computer and sure enough, it works. must be something i can do on this computer to have it work???