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A1418 / EMC 3068 / iMac 18,1 / 2.3 GHz dual-core i5 processor. Released June 2017.

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iMac won’t turn on after upgrading RAM and SSD

I purchased 2 8GB RAM modules and 1 TB SSD to upgrade my extremely slow base model 2017 iMac. I followed the instructions meticulously, took me about 4-5 hours from start to finish and now the thing won’t turn on at all!

Where do I even start trying to troubleshoot the problem? Everything appears to be reconnected properly. I’m ripping my hair out as I need my computer for both work and school!

Update (08/06/2020)

2 led lights

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I took everything apart again to double check the RAM modules, noticed one appeared to be slightly damaged so I swapped it out with one of my old ones. Put everything back together and everything is working now.

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Locate the onboard diagnostics along the left edge of the logic board near the fan

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What are they telling you?

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2 lights come on. I can only upload a photo as an answer.

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Larissa Starr crwdns2934231:0crwdne2934231:0
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