I know this is an old thread, but I just recently upgraded my HDD and RAM on my old 2011 early Macbook Pro with Crucial RAM. I have read forum after forum and have tried everything related to the crashes. My computer will just not start now and just gives me the scary beeps. This morning, I put the old RAM (original) back in, and it started up fine - and running just fine. Is there an update link for any of this? I have all the latest software. It could just be that, well, the machine is now 7 years old and the combination of the new OS system and newer RAM is just too much for it's old bones. It did run OK, for a day or so (intermittent restart problems, etc.) and I read forum post after forum post trying everything. Finally gave up. It's been sitting in my backpack for a couple weeks and last night was the first time I tried to start it. And it would not. In any case, if anyone is still checking this forum, appreciate any update links or responses. I do not have another machine to test the RAM on.
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