No boot, black screen after cpu change
After I changed the CPU on my iMac 2010, from i3-550 to i7-870, I get a black screen. I hear the fans turning on and off continuously. I have tried to go back to the i3-550, but it’s now the same issue, whether I boot with the i3-550 or i7-870.
Thank you in advance
Sorry for commenting back a week late, I’ve been busy.
Here are the pictures of my socket
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I don't see any damage I also don't see any signs of thermal paste. So clearly you either did a good job not getting it all over or did a good job cleaning it up. Don't forget you need to put a small amount on the heat spreader cover, don't let is ooze over the edge.