iMac will not boot after attempted GPU swap.
After attempting to swap out the GPU on my 2011 21.5 inch iMac, it refuses to boot. After plugging it in and pressing the power button the fans will spin up for a moment then stop for several seconds, this will repeat but nothing else happens. I’ve replaced the old (working) GPU and it’s no different. Any advice on what it might be? Thanks a million!
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2 opmerkingen
Did you try safe mode or try running the onboard diagnostics?
Reference: Mac startup key combinations
door Dan
Thanks for the reply. Unfortunately it isn't even getting that far. It's showing no lights on the logic board, no chime and nothing on the screen. Just the occasional puff of the fans.
door Stephen Nicholls