And I'm not exaggerating when I say that it takes 8-9 hours to install OS X Mountain Lion from the recovery menu I guess what happens is that the computer under-clocks itself by a large amount. This means that the fan runs at max speed all the time, easily correctable with a fan control program, but much worse, everything runs so slow that you wouldn't believe it. Because, without the original screen in place, the iMac is missing at least one temperature sensor and it just goes ape to say the least. This was neat, but unfortunately nowhere near perfect. With the screen removed the iMac just defaulted to use the one connected with Thunderbolt. Would I even be able to see the recovery menu on a monitor connected to the thunderbolt port? I expected that this would be a huge problem, and that the iMac would always assume the original screen was still present.įortunately this wasn't the case. I was a bit concerned how the iMac would react when I removed the screen. Ideally I want to build this into a Mac Pro tower, and I didn't want to have a big broken screen standing around.
So after having tested that everything worked perfectly, I decided to remove the hardware from inside. The customer got a new one through his insurance, so he didn't care what happened to it. The result was a broken chassis and screen, but everything else was working just fine.
I got a 27" (late 2012) iMac for free that a customer at our shop had dropped on the floor. I've made some progress by deleting a few kext-files, but as I have absolutely no idea what I'm doing I hope someone here can help to improve performance even further I want to build the hardware into a Mac Pro tower, without the original (broken) screen attached everything runs SLOW as hell. Got a defective 27" iMac (late 2012 with 2.9GHz i5 and GTX 660M). This is a long post, and I can't expect everyone to read through it all. Hopefully I posted this in the right forum