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Orijinal gönderinin sahibi: demo ,


I have a similar problem (my problem was due to a big quake) and also ruled out hard-drive. I am checking it out now but i am sure its hardware and it will either be the PSU (power supply) or the memory (I don't want to even think about it being the mobo ;D)

First I would check the cables...

Replace power cord... (even use a different power socket, try one with no other power cords attached)

Sata cables? (though maybe not applicable to you)

Try swapping out ram... if it works it could just be one stick (if you have two etc) try swapping one out to see which one it is...

Then if that doesn't fix it, it could be the PSU (not sure how easy they are to replace on a imac)

Good luck ;D