iMac mid-2011 Quick HD replacement guide

Just a quick run through of a 2011 iMac repair. I started off by checking the HD. I find out it is not readable at all, so I replace it with a brand new 2TB HD. I did not show it, but there was no other issues with the iMac and have successfully installed El capitan. If you have any further questions or trouble, please comment and I will help you as best as I can.