My late 2011 MB Pro started making the 3 beeps sound. I purchased brand new RAM, just installed it, and it still beeps the 3 times. I tried resetting SMC and tried resetting NVRAM/PRAM. None of this work.
Any suggestions?
Thanks in advance!
Torcida California wrote:
Patriot. PC3 - 10600 1333MHz. From what I saw online, it should be compatible.
Patriot ? Never heard of it...
Best to buy RAM from reliable source with the exact specs.
Usually a lifetime guarantee on RAM from third party source like:
https://eshop.macsales.com/shop/apple/memory/
There are other possible issues:
Try re-seating the RAM: MacBook Pro: How to remove or install memory
- Apple Support https://support.apple.com/en-us/HT201165
you are testing for both bad RAM or bad bank—
one stick at a time in each bank, If the RAM sticks prove to work individual—and banks work individually.
Other known issues are:
or RAM banks slightly distorted/out of flat (use shims)
Thanks for all of the info and the links!
Re: Patriot Memory: I have purchased their products before. They had good reviews on Amazon. Something, of course, isn't right in my situation. The RAM I purchased does match the specs in the re-seating RAM link.
Re-seating RAM: I tried each stick individually in each of the RAM slots. It looks like my bottom slot is the issue. 1 stick of RAM would boot up on the top slot. I guess I can try a couple more times just in case the seating in the bottom slot was somehow off. If the bottom slot is bad, would a single 8 GB stick in the top slot still work? I ask as I have an 8 GB kit and would need to return this to get a single 8 GB stick (likely from Crucial).
leroydouglas wrote:
Torcida California wrote:
Patriot. PC3 - 10600 1333MHz. From what I saw online, it should be compatible.
Patriot ? Never heard of it...
Patriot is one of the larger companies that sell memory. Most of what they have is bought as bare die and then packaged with their label and their boards. Or at least by their contract manufacturers. I've bought their MFi Lightning cables, a USB3 SATA drive enclosure, and some PC2-4200 memory modules from them. They're on par with PNY, Kingston, or Corsair.
You can update the DIMMs in these MacBook Pro by the each DIMM, and Yes, you can leave one slot empty.
The largest DIMM that can be used in one slot is an 8GB DIMM.
It has to be the exact correct spec for a Mac, not slower, not faster, not larger not smaller.
what RAM did you install?
Hi,
Late MacBook Pro requires DDR3 1333MHz SO-DIMM 2GB, 4GB or 8GB pair.
Try to clean RAM slots with cotton swab and see if it's still beeping.
Patriot. PC3 - 10600 1333MHz. From what I saw online, it should be compatible.
That is the RAM I purchased. https://www.amazon.com/gp/product/B005T01Q5E/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
I will try cleaning the slots with a cotton swab and see if that helps.
I tried the cotton swabs and used one of those compressed air things and still the same problem. I called Patriot, but they're not open for a couple more hours.
Torcida California wrote:
If the bottom slot is bad, would a single 8 GB stick in the top slot still work?
Yes.
Late 2011 MacBook Pro - 3 beeps, replaced RAM, still get 3 beeps
