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MacBook won’t turn on at all

I tried replacing my thermal paste so I had to open it up and disconnect everything, then I realized I had no prior knowledge and now it won’t boot up, it makes no noise and everything is connected.

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have you checked flex cables for damage/rips?

does it make any sound?

did you place the logic board on a esd safe mat/surface?

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I have, still didn’t work

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There are two things I would recommend here. Any time an issue crops up after a repair, doing a thorough retracing of your steps can help. If it was working properly before, chances are something is getting overlooked.

I might also have a look at the MacBook Won’t Turn On troubleshooting page.

What was the reason you wanted to replace the thermal paste? Just out of curiosity.

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Ivette Galvan crwdns2934231:0crwdne2934231:0
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