Thank you sooo much for this guide !! It saved my iMac after my hard drive crashed. I was able to skip 5, 6, 7 and 8. Because when you are lifting up the display, your elbow can hold it up, while you unscrew the drive and take the Sata cables off. I replaced my drive with an original Apple drive, just 500 GB for testing, but as mentioned so many times before, fans fans fans. So for a short temp time I used Macs Fan Control ( http://www.crystalidea.com/macs-fan-cont... ) instead of the HDD control, not only the charge factor, but its temp, not permanent. I will replace it with Seagate SSHD hybrid drive, if still needed then, get OWC for fan control. Awesome page, thank you soo much. I was kinda lost before, now I have the knowledge, what was wrong and more important, fix it myself and not some shop who charges outrages $$$$$$.