First of all I've read a bunch of articles online and I'm unable to get any of them to work to get my computer to boot up properly. I was able to take out my 2 TB hard drive and put it in an external enclosure and I was successfully able to boot up into Yosemite from the external enclosure with the internal bay empty. However when I try to do anything like perform a disk scan or browse the Internet the drive reboots itself. Is that because over usb is locking it up or could there be an actual hard drive error. It appears to boot properly, well kinda. If the drive is mounted internally it won't boot at all. What are the chances it's the hard drive cable?