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Early 2011 Model: A1278 / 2.3 GHz i5 or 2.7 GHz i7 processor

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Lower Ram Slot trouble

HI

Thank you for such a wonderful site and helping us with your intelligence.

My problem resides in the Lower Ram Slot, as when I insert the lower & upper Ram in the upper RAM slot it works fine but when I try to switch on my laptop with both the RAM inserted, it won't switches on with 3 beeps with pause of few moments, also tried either of RAMs in the lower slot but the problem persisted.

After examining closely the pins on Lower Ram Slot I found that one of the pins in slightly more lower than others in the line, Is this might be the reason to cause problem??

or changing logic board is the only option left for me????

I have RAM of 8 GP =4+4.

If I use 8GB or 16GB of RAM in only one upper slot (which is working) would it cause problem at later stage????

Please help as I need solution ASAP, it causing me troubles on my JOB.

Thank you

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Your system can support up to 16 GB of RAM using both slots (two 8GB modules).

Given the fact your lower slot is damaged you're only hope here is to get a single 8 GB module and place it in the upper slot. Otherwise you'll need to replace the logic board.

Do make sure your systems firmware is up to date following this Apple T/N: About EFI and SMC firmware updates for Intel-based Mac computers

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Sometimes a lessor RAM stick will work in a filing slot. Leave the 8 GB in the working slot and try using one of your original sticks in the lower.

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sartaj khan will be eternally grateful.
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