Machine slow after HDD replacement with Samgung 840 EVO SSDAfter the installation the machine suddenly got really slow. In the Activity Monitor, the kernel_task is eating 330% of...
Bad video after replacing the hd with an ssd.I have taken the most care when tearing it down. No cables were forced. But when I mounted the machine again and turned it...
Answer to "How come my iMac keeps shutting down after these tries to fix?"The location you describe as hot is where the psu sits. Try to take it to someone who can test all the voltage rails, maybe something is gone bad. I had an similar problem on a late 2009 27" i5 iMac, but we figured out that GPU overheating was the cause (this machine shuts down when the gpu die hits 80 degrees Celsius).
Answer to "Is it possible to add an ssd to this model?"I have a partner who is a dealer for the new Seagate SSHD's and he told me that the amount of failure of these drives are beyond belief. Most of them don't get a year of usage before fail. I can't speak for the Toshibas, but the Seagate ones I recommend to avoid.