Hello. I have an HP Elitebook 2740p. It came without a hard drive, so I had to buy one and put it in myself. The thing is, I have no idea how to put the hard drive in. I am trying to find information on youtube, microsoft, and HP's website, but nothing. The drive is 1.8 inches. Can someone tell me how to put it in? Even if it's not the exact model, please, I need help