Hello there fellow mac users! My 27" iMac from 2011 completely died a few days ago and I'm in desperate need of help. I was playing a game to kill some time and suddenly the whole imac turned off. no image, no sound, just like if one had cut the power. Tried to start it up again, nothing. Not a single noise or image. Completely dead. Tried differend power outlets, still nothing. After reading around the web i came to the conclusion to order a new power supply. It arrived to day and I installed it, but still my beloved iMac shows no signs of life! Tried switching around the ram-modules (4x4gb) but nothing. Only reaction from the system is when I disconnect the power, hold down the start-button, then connect the power. The fans start running and full blast, but no image and nothing else. I checked the little diagnose led's on the logic board to find only the first one lighting up. Does anyone have any clues? I'm desperate to get it working again since I've got important work files on there. I've got the Intel i7 in it, 4x4gb of ram, and the 6970M Graphicscard with 1Tb! PS.: Back in winter I installed a Samsung SSD 850, but the system has been working like a charm till now!