just upgraded RAM and computer beeps 3 times upon startup.

Question

MacBook Core 2 Duo

Modelo A1181: procesador Core 2 Duo de 1.83, 2, 2.1, 2.13, 2.16, 2.2 o 2.4 GHz

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chris kelly @kellybikeco

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Publicado: 6 de feb. de 2017

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just upgraded RAM and computer beeps 3 times upon startup.

MacBook mid 2008

i just replaced the original 1GB RAM sticks with 2 new 2GB RAM sticks i purchased from you guys. it took minutes and was really simple btw.

when i went to startup the computer it beeped three times with a grey screen about every 5 seconds.... i immediately shut the thing down and replaced my original RAM to which it booted up just fine.

i know i seated them properly, so could i have purchased the wrong RAM sticks or are these new ones not working like they should?

this is the original stick.

this is the new stick.

thanks for your advice and help.

Contestado! Ver respuesta Yo también tengo este problema

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One of these is your system:

- MacBook 13" 2.13 GHz Core 2 Duo (White-09)

- MacBook 13" 2.26 GHz Core 2 Duo (Uni/Late 09)

7 de feb. de 2017 - de Dan

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Solución Elegida

Ben @benjamen50

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Mtwo Perform

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Publicado: 6 de feb. de 2017

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Try all the sticks individually to see what will work. Did you originally have two or one ram stick installed.

If you are unlucky it could be a bad ram slot.

There is some pretty useful info here:

One Ram slot gone Bad....

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i pulled two of the original 1GB sticks and replaced them with the two new 2GB sticks... i was so freaked out i didn't think to go back and swap them one at a time thinking i just got the wrong ones and didn't want to ruin the computer...

id first like to know if they are indeed the right sticks, then ill go back at it from there and run a test like what you've mentioned. good idea btw. thanks.

6 de feb. de 2017 - de chris kelly

From your images both are the same spec (DDR2 PC2-5300) just larger and the newer units just a bit faster 667 GHz Vs 555 GHz which is not an issue here: 1 GB Vs 2 GB.

7 de feb. de 2017 - de Dan

thats what i thought.

so, if these are the correct parts and they didn't work then what?

7 de feb. de 2017 - de chris kelly

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One of these is your system:

- MacBook 13" 2.13 GHz Core 2 Duo (White-09)

- MacBook 13" 2.26 GHz Core 2 Duo (Uni/Late 09) — Dan
i pulled two of the original 1GB sticks and replaced them with the two new 2GB sticks... i was so freaked out i didn't think to go back and swap them one at a time thinking i just got the wrong ones and didn't want to ruin the computer...

id first like to know if they are indeed the right sticks, then ill go back at it from there and run a test like what you've mentioned. good idea btw. thanks. — chris kelly
From your images both are the same spec (DDR2 PC2-5300) just larger and the newer units just a bit faster 667 GHz Vs 555 GHz which is not an issue here: 1 GB Vs 2 GB. — Dan
thats what i thought.

so, if these are the correct parts and they didn't work then what? — chris kelly

MacBook Core 2 Duo

just upgraded RAM and computer beeps 3 times upon startup.

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