Hi. I've had a 500GB WD My Passport for about 2 months now. It was working perfectly, until last week when it didn't want to connect properly (ie I would connect it 10 times, and about 6 of the times it would work). Now, it doesn't seem to connect at all. I can feel the HDD vibrating inside, so it is getting power, but it's not showing at all. What's very weird is that it doesn't even show on Disk Utility. I'm completely lost as to what I should do. I need to either get it to work again or reformat it somehow, because I'm going on a trip next week and need the space on it.