Apple Event: May 7th at 7 am PT
I bought new RAM (crucial) for my 2009 MacBook Pro, upgrading 2x2GB to 2x4GB. When I install both 4GB sticks, I get the dreaded 3 beeps. I can install either of the 4GB sticks with a 2GB stick with success (proving that both sticks are indeed good), but not both. Any ideas on a next step?
MacBook Pro, iOS 12
Yeah, that seems to be a common issue when attempting to use RAM of a higher speed than the required spec. When you described the issue, it was that clue that led me to suspect incorrect speed RAM.
Yeah, that seems to be a common issue when attempting to use RAM of a higher speed than the required spec. When you described the issue, it was that clue that led me to suspect incorrect speed RAM.
Does it have specs as below?
| Memory Slots | 2 - 204-pin PC3-8500 (1066 MHz) DDR3 SO-DIMM |
|---|
2 204 pin PC3-12800 DDR3 1067 MHz
PC-3 12800 is 1600mHz RAM. Is that what you have?
Yes - sorry
If you have 1600mHz RAM, that would be the problem. The computer needs RAM as shown in my first post.
Ugh - and for some reason it will run with one 4GB 1600mHZ but not two?
new RAM not working
