2011 Macbook pro upgrade to 16gb RAM -- 3 beeps on startup

My macbook pro is a 15" 2.2ghz quad i7 model purchased June of 2011. I read and researched everywhere and found that this model could support 16gb of RAM so I ordered this, Corsair 16GB Dual Channel DDR3 SODIMM. When I installed the ram and attempted startup I just got a black screen and 3 consecutive beeps and then learned this is a problem directly related to the ram installed. I installed the old ram (4gb) and that is how I'm typing this. Why would this happend if it proved so successful for so many others, according to amazon. Do I need to revert back to snow leopard? Any advice will help thanks.

it is actually that simple since i ran into the same problem when i went 16GB on my mbp.
heard it click but on both banks, turn the computer on and nothing 3 beeps.
took the ram out, put it back in straight, looked at both notches and make sure it's aligned then click again.
turned it on, and i'm back in business.
quick question, what speed did you get?

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Welcome to Apple Support Communities
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jonnyg1986 wrote:
Also are iMac hds 2.5" or 3.5"?
3.5"
jonnyg1986 wrote:
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we are not allowed to speculate much if any in this forum
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Hello all,
First of all let me thanks you guys for the support you have been giving here.
I am new to the forum and this is my first post, I recently bought the new 2011 Macbook pro 13inch 2.3GHz Dual-core Intel Core i5 with the 4GB RAM (4GB 1333MHz DDR3 SDRAM-2x2GB)
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Hi, and welcome to Apple Discussions.
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You do not need to use Hynix; Apple use several brands and as long it's good quality RAM you'll be fine.
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So I have an early 2011 MacBook pro, I believe it shipped with snow leopard originally, as I purchased and upgraded to Lion fairly early on. I am trying to make a partition right now and have it run snow leopard so I can use programs that have PowerPC.
I should note, I replaced both the RAM and the harddrive in my Macbook pro. I changed from 4 GB of ram (that came shipped) to 8 GB of ram from a 3rd party, that I installed on my own months ago, have registered in the computer and have been working fine for quite some time now.
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Is there any way I can install a partition that runs snow leopard on my early 2011 MB pro with what I have (new SSD, New RAM, Current version Lion running, no external drive, lack of original snow leopard disks [I lost them ] and the general 10.6.3 snow leopard boot disks).
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*PS I should also note the DVD drive is working fine, it reads the disk, the disk is brand new, it plays DVD's fine and has never had any issues in the years i've used it for similar tasks*
sorry for the long drawn out post, I just wanted to include as much as possible from what I've seen other people have issues with

BrettGoudy wrote:
...Is there any way I can install a partition that runs snow leopard on my early 2011 MB pro with what I have (new SSD, New RAM, Current version Lion running, no external drive, lack of original snow leopard disks [I lost them ] and the general 10.6.3 snow leopard boot disks)...
As the last post suggests, call Apple and order a replacement original disc for about $17. They will ask you the model and serial numbers.
Your retail version of Snow Leopard OS 10.6.3 will not work on that Mac as it requires a minimum of OS X 10.6.7 to boot and operate.
Another alternative is to again borrow another Mac to install your retail Snow Leopard into an external HD or partition, upgrade it to 10.6.8 and then clone it back to a partition on your MBP.

2011 Macbook pro upgrade to 16gb RAM -- 3 beeps on startup

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