Released June 2012, Model A1278. Intel processor with Turbo Boost, Up to 512 MB DDR5 Video RAM

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What do I need to get replaced due to water damage?

Hi. I spilled some water on my laptop while it was on during my homework 4 days ago. I was able to take the back off and take out the battery connector. Today, I cleaned the motherboard (99% isopropyl + q tip) and booted the machine up successfully. However upon entering the log in screen for my windows partition, the screen began to fill with barcode stretch marks across the screen. I turned the laptop off and managed to apply a NVRAM reset to check the RAM but from the three beeps I get as a response, my RAM sticks seem to be damaged as well. Anyone have any idea as to what needs to get replaced on my machine?

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First, the three beeps is a RAM error. Try reseating the, that failing use just one and try it each slot both to test the RAM and the slots. Do that with both sticks and you will have a much better idea of where the problem is/

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Hi. Thanks for such a quick response. I might go ahead and purchase a new set of RAM sticks as it's been some time and I am in need of an upgrade. But are the screen marks a direct consequence of faulty RAM? I've taken the time to read up further on similar cases and it may be an issue with the inverter or a cable.

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Yes when it squelches like that it's RAM get some confirmed working RAM try again, also inspect Memory slots clean again and tighten screws on the one side use compressed air if you can real close , pencil eraser if needed to scrub the memory teeth you may only get to use 1 slot in the end a 4 gb or 8gb stick'r.

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Cleaned out the RAM stick slots with compressed air, a toothbrush, mini blow dryer, and isopropyl alcohol. Machine boots up and is working properly. Thank you Mayer.

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Looks the cleanup process I ran you through did the trick.

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Eric Ahn will be eternally grateful.
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