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Modelo de principios de 2011, A1278 /2.3 GHz i5 o 2.7 GHz con procesador i7.

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MacBook Pro boots up fine then screen gets weird lines and 3 beeps

My MacBook Pro boots up. Looks like it is working fine. But, after a while, sometimes 5 minutes and sometimes 30 minutes, on display, freezes, and starts beeping 3 times. See attached short video please.

https://1drv.ms/v/s!AjlNaeToTqs7j3V1_eIC...

If I replace the Logic Board will that fix it?

Contesta esta pregunta Yo también tengo este problema

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Let's first run the onboard diagnostics to check things. Your issue could be bad RAM. This series uses the main RAM for its VRAM. The three beeps is telling me your RAM is the issue. So is it the RAM its self or the RAM holder?

Restart your system and Press the D key let us know how it goes. You may need to run is a few times.

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Hi Dan, I tried to run the diagnostics, kept crashing with the three beeps. tried using one Ram stick at a time in both slots and in every possible configuration. But it would crash. One time the diagnostics worked for a minute, but not long enough.

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Thats not good ;-{ The beep code is telling us the RAM and/or the RAM carrier are having problems. Sometimes loosening the carrier screws slightly can help. Otherwise, it's time to have the logic board looked at by someone with deeper skills or just replace it.

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Those sounds usually mean the RAM, so it could be that, it could maybe be the logic boards, but these models are notorious for having GPU failures, which would explain the screen going bad. I would look around some on the Internet, and either try to diagnose it more yourself or take it to a local repair shop to have it diagnosed.

Good luck!

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@shtechservices - You're thinking of the 15" model with the AMD Radeon HD 6750M or 6770M GPU's, the 13" uses the Intel HD Graphics 3000.

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Remove the ram stick from the lower ram slot and try to run the computer.

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Dude estará eternamente agradecido.
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