I had a 500GB western digital hard drive that fell of my desk and no longer worked. I opened it up and the electrical board between the hard drive and the usb cabel was cracked. So i put the hard drive in my computer as a slave. The drive shows up in my computer but when i try to open it it says the drive is not accessible. I tried to re format it in disk management but it also says the drive is not accessible. any ideas on what the problem is?