I was having problems, with a very slow hard drive. I looked up the prices to get replacement done, for a very standard 500 GB hard drive, with work included, it was 265. That was the cheapest option. So then I look at price for the original hard drive that I had on my Imac already, it was 50 dollars in new Egg. I decided to buy a fusion drive 1TB that was going for 70 , and bought myself a kit to the install, that was around another 30 dollars. So I went ahead and did the replacement looking at a Youtube video, I thought I was good to go, but then when I went to turn the Imac back on, it was not turning. It occurred to me that maybe I had gotten a bad hard drive, so I put back the old one back on. The mac didn't turn on. So after seeing if was the cable, or something. I decided to go back take out the hard drive again, and looked back again, then I noticed, that when you do the replacement, there is a speaker, you have loosen up, here was where I made the mistake, I guess in my haste, I yank it to much. The tutorial showed just a move it up a bit. What I did was break off a wire that is connected to the button by pulling more than I should have. The problem is there is no way I can see to get to the button again and try to rewire it, is hidden compartment in the casing the location of the button. I don't see a way for an easy fix. Now I looked up this problem, someone said that you have to buy a whole new rear casing, to repair a this button wire. Then in Ebay I saw something in the price range of 300 dollars alone on the part itself. I don't even want to try to do this again by myself. With my lack of expertise at this I might mess up again. Now if if the Imac takes over 600 to 700 dollars to fix. At what point does it become prudent to just give up on the machine. I had it over 2 plus years. Besides the bad drive, the machine was in very good shape. Tomorrow I'm going to call up, but I got a feeling is going to be costly.