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Problems after upgrading CPU, RAM & drives (SSD’s)

@blinkoutatime so it was JUST one CPU pin which made the whole system not work/turning on? Do I understand that correctly? 😯

Because I have a similar problem changed the RAM, the CPU and the hard drive… I did everything really carefully and exactly according to instructions from iFixit and now my iMac isn’t turning on… 😩🙈 checked the power supply and the power-button cable but everything seems to be fine 🤷🏻‍♂️ … HEEELP 😥

Ответ на этот вопрос У меня та же проблема

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@samkln - Reseating the CPU after removing to swap it out or just to clean the paste off the CPU and heatsink to apply fresh TIM can be difficult so one or more pins can get messed up if the chip is not seated properly. Apple makes the task quite hard as the tension springs are quite tight.

Update (01/16/2023)

@samkln - OK that list offers a clue! Sound like you did it all at once So now we don’t know for sure what is messed up.

While it’s a pain I try to limit the amount of change to make diagnostics easier.

So… the first thing here is popping out the CPU and yes, putting the i5 back in, in case you have a bad chip as well as check the socket pins with a good magnifier.

I would also pull the blade SSD for now and I would setup a bootable external drive with what your system currently has (copy over the OS installer onto it as well)

As far as overclocking sorry Mac’s don’t offer that, what the firmware is set to is what you have.

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@danj Could it be the problem why the iMac is not starting? When the new CPU is not seated correctly? The first LED on my motherboard is on and the power supply seems to be working just fine… I can’t find what could be the problem why the iMac ist not starting 🤔🤷🏻‍♂️🙈

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@samkln - did you replace it?

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@danj Yes I wanted to replace the i5 with an i7 and before that I researched what would be the highest compatible CPU for my iMac model 🤔🙈

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@samkln - The best this system can support is the i7-7700, is that was what you installed? If not that could be the issue if the pins aren’t damaged.

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@danj Yes it is! I first did the research and then bought the Intel i7-7700, 64GB RAM (which is possible with overclocking, I asked the german company which produces the RAM), a 1TB PCIe SSD from OWC (compatible with my iMac Model) and a 2TB SSD from Crucial replacing the standard Macintosh HD 🙈 checked and carefully cleaned the the dust in the whole iMac … and it still won‘t start 😓 just the first LED of the diagnosis LEDs is on… 🤷🏻‍♂️

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Sam будет вечно благодарен.
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