9/7/2023 0 Comments Macbook pro 3 beeps![]() You can force full memory retraining by resetting your PRAM ( Option Command P R during boot). Although I can’t think of a good reason why it would only happen for the 4+4 case, your firmware may not be recognizing a new DIMM has been installed and is trying to use a stale memory training table with the new card.When you ran your experiment, did you try both of the DIMMs alongside the 2 GB DIMM? And then did you try each of those DIMMs in the other slot alongside the 2 GB? In other words, you should have performed this experiment with FOUR different memory configurations. It may be that one of your 4 GB SO-DIMMs is of marginal quality and is failing during one of the training steps.Now let’s consider a couple of possibilities: According to Apple, the mid-2009 MacBook Pro does support up to 8 GB:ĤGB (two 2GB SO-DIMMs) of 1066MHz DDR3 memory two SO-DIMM slots support up to 8GB I talked to two people, the last of whom HUNG UP ON ME when he realized that I was not going to. Called APPLE SUPPORT, as I had done in the past as a long time Apple user, and was SHOCKED by the AWFUL customer service. For 29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer. I have an 18 month old Macbook Pro 13'' that won't boot, but instead it just beeps 3 times (a RAM issue). Let’s consider the most common.įirst, let’s make sure your system supports 8 GB. 820-3332-A MacBook Pro Retina 15' A1398 No display 3 Beeps Rossmanngroup Forums. ![]() 3 beeps + 5s pause means your memory failed training. ![]()
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