I posted on another thread but perhaps someone could help me here. I am so frustrated. Picked up my 27" imac yesterday and had bought this ram to add to it
https://www.amazon.ca/gp/product/B071KP8CGG/ref=ppx_yo_dt_b_asin_image_o02_s00?ie=UTF8&psc=1
when the ram is added the computer will not turn on, without the ram it works. Any suggestions?
The very same thing happened to me, with the 2x16GB version of the same Crucial RAM you bought.
I had installed
the new RAM before starting up the iMac for the first time; I am quite certain that I seated it firmly. I waited a few minutes for the iMac to complete its initialization (I could hear the internal fan quietly idling, so I knew the power was on) before concluding that it was not going to start up.
I powered down the iMac, turned it back on, and waited a good five minutes. Again it would not start up.
I removed the new Crucial RAM, and the iMac started up right away.
Then I reinstalled the new Crucial RAM, and this time the iMac started up immediately, recognizing all 40 GB of RAM (2x4 GB Hynix RAM from Apple plus 2x16 GB Crucial RAM), and it has been working ever since.
Even if my experience and kristincb’s were flukes, given that
Crucial clearly do not want to sell to us (see the picture below), I am frankly sorry that I gave them my money. I should have spent the extra US $30 to buy from a company like OWC who want our business and will guarantee support for their RAM in our 2019 iMacs.