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Model A1418 / Late 2013 / 2.7 & 2.9 GHz Core i5 or 3.1 GHz Core i7 Processor

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problems rebooting after memory upgrade

upgrading from 8G to 16G. followed video instructions, no problems.

used Timetec 8g DDR3L 1600. suppose to be compatible with stock PC3L 12800.

upon reassembly and rebooting, power on gets the tada sound, however, the apple logo and progress bar are not visible. the screen is dark (like no light). nothing happens.

disassembled and reassembled. same problem tada sound and logo and progress bar do not appear (screen is dark).

I reinstalled my original 8g's to see if I could get that to work. however, it did not. I have the same results with original memory now, TaDa sound, no logo or progress bar.

what should happen after getting the TaDa sound? what can I do?

thanks.

Update (04/15/2022)

Dan,

how would I attach an external monitor to the imac? I don't see a way I can do that. firewire??

what are my chances of getting another cable from motherboard to display? I hate screwing up!

if I was able to connect a monitor, would I see the normal boot process take place?

thanks

frank

Beantwoord deze vraag Dit probleem heb ik ook

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If you have a 2013 system then you have Thunderbolt2 which also supports a MiniDisplay interface as well. So this will offer what you need to connect a HDMI display to your system Belkin Mini Displayport to HDMI Adapter

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You likely don't have a RAM issue! More likely the display connection is your issue. Try connecting an external monitor to your system while your internal is also plugged in. Are you seeing an image on it?

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Frank zal eeuwig dankbaar zijn.
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